Comparing Romeo and Juliet Death Scenes free essay sample

In the 1997 variant of Romeo and Juliet, Luhrman utilized the numerous paradoxical expressions, and amusing images to show his understanding of the appalling passing scene. One significant event that continued occurring in his film was the vulnerability of the completion and narrow escapes. A model being when Romeo gets news that Juliet is dead in Mantua, he promptly gets in his vehicle and drives off. On the off chance that he had stood by only a couple of more minutes, and thought reasonably, the postal worker would have conveyed to him the letter from Friar Lawrence clarifying everything. There are numerous different instances of this like when Romeo is going to take the toxic substance, Juliet awakens to watch him do it. When in the event that he had held up five seconds, or she had been quicker in letting him know shes OK, they wouldve lived joyfully! The chief did this since he needed to make an overwhelming demeanor of incongruity. We will compose a custom article test on Looking at Romeo and Juliet Death Scenes or then again any comparable point explicitly for you Don't WasteYour Time Recruit WRITER Just 13.90/page Despite the fact that we, as the crowd realize that the fundamental characters dont endure, the manner in which he arranges these near fiascoes makes the watcher dubious regarding what the completion will truly be. This method likewise serves to grandstand the awful blemish that makes up the tragical Romeo. In the real demise scene itself, Luhrman worked superbly of demonstrating the energy, disaster, and distress of the film. There is some discussion on the change that Luhrman made concerning on the off chance that he did Shakespeares unique play equity. The way that Friar Lawrence didnt even show up is a significant factor that was excluded from his adjustment. Luhrman did this to represent the sentiment of such a sensational scene in the last demonstration of the film, without the interference of Friar Lawrence to obliterate the dismal magnificence of it . By the day's end Luhrmans understanding of the play was a phenomenal, contemporary, and flawlessly styled. In the Zefferelli variant of Romeo and Juliet, in spite of the fact that he depicted the demise scene in practically the entirety of its exactitude, there were still a few parts to be missed. Shakespeare was a stunning play-compose that made fantastical stories, with web-like plot lines. A portion of his plays, anyway have been lost in interpretation. The first play of Romeo and Juliet has certain components in it that individuals of todays society can't identify with. A case of this is Juliet getting hitched at 14 to a more seasoned man. The way that Zeferelli followed the first play makes it ungainly to associate with. One explicit zone that completely lost the crowd was in the during the passing of Romeo and Juliet, everything was so uncouth and awkward looking. The lines were difficult to comprehend, the acting was certainly inadequate, and it truly made the scene ridiculous, and not connectable. The entire scene itself was clumsy to such an extent that individuals were snickering, and thinking that its amusing! That is one certain approach to realize that the chief was not doing the play equity. Both of these motion pictures are astounding movies to watch, yet it is certain that Luhrman is the predominant chief.

Martin Luther King, Jr. Essay -- African American Black Racism Essays

Martin Luther King, Jr. I HAVE A DREAM! In a period when racial separation and open fanaticism towards African Americans in the United States was getting progressively obvious, this straightforward, yet incredible explanation by Dr. Martin Luther King Jr. was an encouraging sign for every single African American in the nation. In his discourse, on the means of the Lincoln Memorial, Dr. Ruler communicates his disappointment that following a hundred years since the marking of the Emancipation Proclamation, African Americans are as yet treated like peasants. Be that as it may, Dr. Lord likewise communicates his expectation that business as usual will change and African Americans around the nation will be â€Å"free at last.† Dr. Lord utilizes expressive proclamations to speak to his audience’s feelings and to see the challenges and hardships that African Americans the nation over endure all the time. Dr. Lord utilizes sound logical gadgets to pass on his message that â€Å"all men are made equal † and that bigotry ought not, can't proceed if the country is to succeed.      Upon opening his discourse, Dr. Lord makes reference to past occasions: the Gettysburg Address and the marking of the Emancipation Proclamation, works both by Abraham Lincoln that guaranteed that opportunity in the United States will persevere. â€Å"Five score years back, an extraordinary American†¦ marked the Emancipation Proclamation, [which] came as an incredible encouraging sign to a huge number of Negro slaves.† Dr. Lord does this so as to get a handle on his audience’s consideration and to plot that following a century since the liberating of African American slaves, the Negro race is as yet treated no in an unexpected way. He proceeds to express that African Americans are â€Å"exiled in their own territory. Thus we’ve come here today to perform a dishonorable condition.† This amazing message infers that no longer will African Americans stand around while their common freedoms and human rights are stomped all over by racists and biased people or overlooked by the legislature.      Dr. Ruler utilizes undertones, words, for example, slaves, treachery, opportunity, and expectation, to speak to his audience’s feelings and to stretch the significance that open treatment of African Americans must be changed to suit the thriving of our developing country. â€Å"[Negro slaves] have been burned in the flares of shrinking injustice.† â€Å"This is our hope†¦ That [whites and blacks] will have the option to go to bat for opportunity together.† He likewise utilizes connotat... ... skin yet by the substance of their character. I have a fantasy that one day†¦ minimal dark young men and dark young ladies will have the option to hold hands with minimal white young men and white young ladies. I have a fantasy today.† King likewise utilizes parallelism to underscore that the country must meet up to â€Å"let opportunity ring† for each American from each side of the nation.      Martin Luther King Jr.’s â€Å"I Have a Dream† discourse is one of the best and most compelling addresses written in the present day. His utilization of undertones, overstatement, and illustration spoke to his audience’s feeling of rationale, profound quality, and outright old sound judgment â€Å"that all men are made equal† and to deny this is to prevent the aim from securing the maker. Further, Dr. King’s utilization of parallelism permitted him to drive his point across â€Å"that all men are made equivalent, that they are blessed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the quest for Happiness† and that the nation must be changed into a country of resistance, acknowledgment, and harmony. His utilization of sound logical gadgets permitted him to influence his crowd to change the â€Å"status quo† and empower all Americans to be genuinely â€Å"free at last.†

Tips for Coping With Nausea While on Antidepressants

Tips for Coping With Nausea While on Antidepressants Depression Treatment Medication Print Coping With Nausea While on Antidepressants Gastrointestinal Side Effects Common With SSRI Drugs By Nancy Schimelpfening Nancy Schimelpfening, MS is the administrator for the non-profit depression support group Depression Sanctuary. Nancy has a lifetime of experience with depression, experiencing firsthand how devastating this illness can be. Learn about our editorial policy Nancy Schimelpfening Medically reviewed by Medically reviewed by Steven Gans, MD on August 05, 2016 Steven Gans, MD is board-certified in psychiatry and is an active supervisor, teacher, and mentor at Massachusetts General Hospital. Learn about our Medical Review Board Steven Gans, MD Updated on February 04, 2020 Depression Overview Types Symptoms Causes & Risk Factors Diagnosis Treatment Coping ADA & Your Rights Depression in Kids Nausea and vomiting are two of the more common side effects of antidepressants, and it may take some time to get over these symptoms when first starting treatment. In fact, nausea is often cited as the number one side effect  of selective serotonin reuptake inhibitors (SSRIs) used to treat major depression and anxiety disorders.?? In some cases, nausea and vomiting can become so severe or persistent that a person has no other option but to stop treatment. Verywell / Brianna Gilmartin Causes Nausea and vomiting are common side effects of many drugs. These symptoms are more often due to the effect a drug has on the central nervous system (CNS)?? rather than any toxic effect it has on the stomach or gastrointestinal tract (GIT). The situation is slightly different with SSRI antidepressants. This class of drug works by stimulating the production of serotonin, a neurotransmitter associated with mood, cognition, and appetite. When serotonin levels increase under the influence of SSRIs, they stimulate serotonin receptors in the GIT as well as the brain. The combined stimulatory effectâ€"on both the GIT and CNSâ€"can trigger such side effects as nausea, vomiting, diarrhea, and the loss of appetite (anorexia). Call your doctor if you experience persistent vomiting for more than 24 hours and have signs of moderate dehydration, or if vomiting and diarrhea are both present. Antidepressant Withdrawal Antidepressants can also cause nausea and vomiting when treatment is stopped too suddenly. Known as antidepressant discontinuation syndrome (or simply antidepressant withdrawal), the condition can cause an array of symptoms if the body is suddenly deprived of the drug. Gastrointestinal symptoms are among the most common and potentially severe. While antidepressant withdrawal symptoms are less intense than those associated with benzodiazepines, they can persist for several weeks and even lead to rebound depression?? (in which depressive symptoms return, sometimes worse than before). In addition to nausea and vomiting, antidepressant withdrawal can cause diarrhea, anxiety, fever, headaches, confusion, profuse sweating, tremors, dizziness, vivid dream, panic attacks, and even hallucinations. People who have taken antidepressants for longer than six weeks are more likely to experience withdrawal unless the daily dose is gradually tapered. How to Cope With Withdrawal Nausea Risk by Drug Type Research  issued by the U.S. Food and Drug Administration suggests that the risk of SSRI-associated nausea ranges from significant to high: Paxil (paroxetine): 3.2 percent??Celexa (citalopram): 4 percentLexapro (escitalopram): 15 percentProzac (fluoxetine): 21 percent??Zoloft (sertraline): 26 percentLuvox (fluvoxamine): 40 percent This shouldnt suggest that nausea and vomiting only occur with SSRIs. The symptoms are also common with other classes of antidepressants, albeit less commonly or profoundly. These include tricyclic antidepressants (TCAs), serotonin-norepinephrine reuptake inhibitors  (SNRIs) and selective serotonin-norepinephrine-dopamine reuptake inhibitors (SNDRIs), all of which increase serotonin availability in the blood. Nausea and vomiting are less common with a class of antidepressant known as monoamine oxidase inhibitors (MAOIs). The only exception is with MAOIs are stopped too abruptly, triggering withdrawal. Coping In most cases, nausea and vomiting will develop soon after treatment is started and gradually resolve within one to two weeks once the body adapts to the medication. However, as many as 32 percent of people taking an SSRI will experience recurrent bouts for up to three months.?? Fortunately, there are things you can do to minimize these symptoms: Take your medication with food, unless you are told otherwise.Take your antidepressant at bedtime to sleep through the worst of the symptoms.Eat smaller, more frequent meals.Suck on sugarless, hard candy whenever you are nauseousTake an antacid like Zantac (ranitidine) or bismuth subsalicylate like Pepto-Bismol.Sip ginger tea or slightly flattened ginger ale.As your doctor about a slow-release form of your antidepressant.Ask your doctor to temporarily lower your dosage. Your doctor can also prescribe anti-nausea medications such as Zofran (ondansetron).?? While proton pump inhibitors like Prilosec (omeprazole) may help, they can sometimes increase the concentration of antidepressant in your blood and may require a dose adjustment to avoid new or worsening side effects. If your nausea or vomiting becomes intolerable, your doctor may have no  other choice but to change treatment to another antidepressant with a lower nausea risk, such as Celexa (citalopram), Paxil (paroxetine), or Symbyax (fluoxetine/olanzapine). Drug Tapering Strategies To reduce the risk of withdrawal symptoms when stopping an antidepressant, speak with your doctor about the appropriate tapering strategy. Going cold turkey is never advised and may end up triggering the very symptoms you were being treated for. As a general rule, the longer youve been on antidepressants, the longer and slower the tapering period will be. Some people can be tapered off in a matter of weeks; others may take months. Most doctors will reduce the daily dosage in three to four stages, maybe more if youve been on a drug for a long time. Examples include: Paxil??Starting dose: 60 milligrams (mg)1st dose reduction: 40 mg2nd dose reduction: 30 mg3rd dose reduction: 20 mg4th dose reduction: 10 mgCelexaStarting dose: 40 mg1st dose reduction: 30 mg2nd dose reduction: 20 mg3rd dose reduction: 10 mgLexapro??Starting dose: 20 mg1st dose reduction: 15 mg2nd dose reduction: 10 mg3rd dose reduction: 5 mgProzacStarting dose: 60 mg1st dose reduction: 40 mg2nd dose reduction: 30 mg3rd dose reduction: 20 mg4th dose reduction: 10 mgZoloft??Starting dose: 200 mg1st dose reduction: 150 mg2nd dose reduction: 100 mg3rd dose reduction: 75 mg4th dose reduction: 50 mg Tapering should always be done under the supervision of a doctor. In some cases, tapering may require altering doses if an interim dose is not available. (For example, you may need to take 40 mg one day and 20 mg the next if a 30-mg pill is not available.) Unless otherwise directed, never cut an antidepressant in half as this affects the speed in which it is absorbed and may trigger side effects. Call your doctor immediately if you experience any signs of withdrawal. How to Avoid Antidepressant Withdrawal

Analysis Of The Film Django Unchained - 1570 Words

Title: Django Unchained Film Origin Django Unchained originated by the 1966 film Django as Director Quentin Tarantino was writing a novel on Italian Director Sergio Corbucci, who was famously known for making spaghetti western films. Summary of the film Django Unchained is a film that follows the story of Django, who was a slave turned bounty hunter, and Dr. King Schultz, who is a bounty hunter. Schultz purchases Django in order to make him a freeman, due to the information he has about his bounty for Schultz. In return, the only goal Django sets out to achieve is finding and rescuing his wife, Broomhida, after they were separated in a slave deal. Schultz and Django come to find that Broomhida is located at the location of the famous Calvin Candie, who is a cotton-field owner. Schultz and Django then come up with a plan to rescue his wife from Candie. Film’s Genre Drama, Western Possible Themes Slavery, Bounty Hunting, Love, Education, Freedom Title Meaning The meaning behind the title Django Unchained comes from Django himself. With Django being a slave, the movie shows him being â€Å"unchained† because of Schultz, as well as gaining power and intelligence to rescue his wife. Character Development Django had one of the most important character developments in the film because of the change in personality. For example, when first introduced Django is quite. He was not super talkative, but rather acting like a sponge to Schultz. Django trusted Schultz, and for good reason.Show MoreRelatedAnalysis Of The Passing Of Grandison And Quentin Tarantino s Film Django Unchained 1068 Words   |  5 Pagesstory about slavery? Slavery is typically a sensitive and serious topic. In Charles W. Chesnutt’s short story, â€Å"The Passing of Grandison† and Quentin Tarantino s film, Django Unchained, these three components were combined for entertainment purposes. In this essay, I will implement the comparison that both the short story and film shows with the three component of humor, mockery and the relationship goal of a slave. â€Å"The Passing of Grandison† was humorous in many ways. The humor started theRead MoreDjango Untrained Analysis1525 Words   |  7 PagesWhat is the historical significance of Tarantino’s Django Unchained? Racism has been a prevalent issue throughout the history of the United States. From the introduction of slaves to the â€Å"New World† in the 17th century to the killing of innocent black individuals by police officers today, racism has defined this country. Director Quentin Tarantino, in his spaghetti western film Django: Unchained, addressed this issue. The film features a black slave who is freed at and sets out on a revenge missionRead MoreAnalysis Of Django Unchained And 12 Years A Slave1543 Words   |  7 PagesAt first, I wanted to analyze the movie Django Unchained and how it took a somewhat satirical approach on slavery and how slaves were treated in the 19th century. But when I saw 12 Years a Slave, and how it took a more serious approach on how slavery was in the 19th century. There were a lot of compare and contrasts that came up as I finished watching both films. So nonetheless, this is a double feature analysis on Django Unchained and 12 Years a Slave. Here I w ill summarize and discuss about theRead MoreEssay about Analysis on Django Unchained596 Words   |  3 PagesAnalysis on Django Unchained Django aside from being a fantasy film, it does show how an older America once was. Set during 1858, is full of racism and violence. Although, the movie stabilizes these characteristic with a bit of comedy. Nevertheless, according to Karl Marx’s conflict theory people of lighter skin would be more dominant whereas darker skin people would be considered more submissive and less powerful. Even Calvin explained how the slaves could have ganged up, or slayed his ancestorsRead MoreDjango Unchained: Perpetual Slavery. Implicit Messages,1837 Words   |  8 Pages Django Unchained: Perpetual Slavery Implicit messages, although sometimes difficult to notice, are a big part of today’s media. Whether it be film, literature, art, or radio, implicit messages are hiding and waiting to be found by the audience. One such example is the 2012 movie Django Unchained. Although it is a fairly bloody action movie, a predominant implicit message from this film is that slavery is sugarcoated most of the time and not shown for what it truly was, among other messages. DjangoRead MoreRelationships, Deception And Conflict In The Movie Django Unchained739 Words   |  3 PagesQuentin Tarantino wrote and directed the Oscar nominee and winner for Django Unchained. This film won the academy award for best supporting actor and best original and best original screenplay. Tarantino is known for his â€Å"unpredictable violent films and first gained fame for his movie Pulp Fiction† (Biography). The movie Django Unchained takes place two years before the Civil War a slave name Django finds himself traveling with an unorthodox German bounty hunter Dr. King Schultz. The relationshipRead MoreDjango Unchained Analysis Essay2230 Words   |  9 PagesDjango Unchained: Communication and Culture The film set in the deep South in 1858, about a slave who gains his freedom with the help of Dr. King Schultz (Christoph Waltz), a German bounty hunter, and sets out to rescue his wife from a brutal Mississippi plantation owner is an intriguing story with very graphic action scenes. The plot of the story begins as Dr. Shultz buys Django (Jamie Foxx), a black slave, from some traveling slave owners. He buys Django because he is chasing a pair of outlawsRead MoreBlack Culture And The Black Experience1943 Words   |  8 Pagesdepends on the source vision†. If one does not experience first-hand they see through another medium which is often film and television. Film is one of the reasons black culture and the black experience is misunderstood and filled with fabricated beliefs. African Americans have been involved in Hollywood films since film earliest forms in the early 20th century. In these early films African Americans was showed in a damaging unpleasant way. African American filmmakers have been are emancipating the

Principal Difference Between Apollonius And Jesus

Ehrman s first argument delves into the history of so-called divine beings , particularly in ancient Greece and Rome, to help his argument, as he claims that Jesus was not the first, and certainly not the only, divine being in history, saying that We should not think of Jesus as unique , if by that term we mean that he was the only one like that -that is.....a man who was also in some sense divine (Ehrman 17). Ehrman s first example is Apollonius, a man whose story is very similar to Jesus. According to Ehrman, the birth of Apollonius came with divine signs from the heavens, and as an adult, he left home, traveling and preaching, collecting followers and performing miracles, and leading his followers to believe that he was the Son of God. Later, like Jesus, he too angered the Roman authorities and was put to death, though he allegedly ascended to heaven afterwards. However, the principal difference between Apollonius and Jesus was that Apollonius was a pagan, a worshiper of multip le Roman gods, who was seen by some as a competitor of Jesus, though historically, Jesus and his followers rose victorious, due to the spread of Christianity, and Apollonius remains all but forgotten to today s society. However, it wasn t just holy men who could come to be revered as divine, according to Ehrman, as he moves on to talk about how Roman emperors were often revered as gods. For instance, Julius Caesar declared that he had a divine heritage, In a funeral orationShow MoreRelatedA Picatrix Miscellany52019 Words   |  209 Pagesless strange by administering them in small doses, or to demonstrate the equal validity of the magical and philosophical material, or for a combination of all three reasons. At all events, a similar method of presentation is apparent in one of the principal sources of The Aim of the Sage, the encyclopedia of the Brethren of Purity (Ihwà ¢n al-Safà ¢). What follows is a survey of the whole, with a sketch of the sources, as far as they can at prese nt be identified. No attempt has been made to impose a logical

Reid Based Prepaid Energy Mater Free Essays

string(700) " must be able to handle any situation without human intervention – Memory space – Memory is limited on embedded systems, and you must make the software and the data fit into whatever memory exists – Program installation – you will need special tools to get your oftware into embedded systems – Power consumption – Portable systems must run on battery power, and the software in these systems must conserve power – Processor hogs – computing that requires large amounts of CPU time can complicate the response problem – Cost – Reducing the cost of the hardware is a concern in many embedded system projects; software often operates on hardware that is barely adequate for the job\." chapter 1 [pic] 1. 1 Objectives of the Study Prepaid energy meter are being used worldwide to improve the collection of funds for the energy used. Weather it is developed nation or developing nation all electricity boards are facing two major issues 1. We will write a custom essay sample on Reid Based Prepaid Energy Mater or any similar topic only for you Order Now Power Theft 2. Collection of funds In the existing system the above two problems are non predictable and time consuming process respectively. To overcome these things in the proposed system Cal cards has developed and implemented as RFID based pre-paid energy meter. Cal card take information management to new heights with RFID technology. Using the state of the art technology, we can now write data into the RFID tag electronically. Using dual Authentication, Stream Encryption and other security features we restrict access to un-authorized personnel for any particular information. In this project three units are important they are RFID Card, RFID Reader and Writer. Tags are programmable and they may be read or read/write i. e. the information stored in the tag’s memory cannot be changed or can be updated as required. The reader powers the antenna to generate radio frequency waves to transmit a signal that activates the tag and allows data to come into or leave the tag’s memory. This card can be designed to hold all amount details including Name of the family head, ID number, resident address and amount has been recharged. chapter 2 [pic] 2. 1 Methodology of the study Methodology: This System assigns a unique card number for each house. A particular house person places the RFID card within 5cm distance from the RFID Reader. The RFID Reader reads down the time, date and for how much amount it was recharged. The success of recharge will be indicated on the LCD display with buzzer acknowledgement sound. The display also indicates the current energy utilization. The Interface software is responsible for energy utilization record processing and calculation amount for the utilized energy. 2. 2 EMBEDDED SYSTEM: Embedded System is a combination of hardware and software used to achieve a single specific task. An embedded system is a microcontroller-based, software driven, reliable, real-time control system, autonomous, or human or network interactive, operating on diverse physical variables and in diverse environments and sold into a competitive and cost conscious market. An embedded system is not a computer system that is used primarily for processing, not a software system on PC or UNIX, not a traditional business or scientific application. High-end embedded lower end embedded systems. High-end embedded system – Generally 32, 64 Bit Controllers used with OS. Examples Personal Digital Assistant and Mobile phones etc . Lower end embedded systems – Generally 8,16 Bit Controllers used with an minimal operating systems and hardware layout designed for the specific purpose. Examples Small controllers and devices in our everyday life like Washing Machine, Microwave Ovens, where they are embedded in. SYSTEM DESIGN CALLS:[pic] THE EMBEDDED SYSTEM DESIGN CYCLE: [pic] â€Å"V Diagram† In this place we need to discuss the role of simulation software, real-time systems and data acquisition in dynamic test applications. Traditional testing is referred to as â€Å"static† testing where functionality of components is tested by providing known inputs and measuring outputs. Today there is more pressure to get products to market faster and reduce design cycle times. This has led to a need for â€Å"dynamic† testing where components are tested while in use with the entire system – either real or simulated. Because of cost and safety concerns, simulating the rest of the the system with real-time hardware is preferred to testing components in the actual real system. The diagram shown on this slide is the â€Å"V Diagram† that is often used to describe the development cycle. Originally developed to encapsulate the design process of software applications, many different versions of this diagram can be found to describe different product design cycles. Here we have shown one example of such a diagram representing the design cycle of embedded control applications common to automotive, aerospace and defense applications. In this diagram the general progression in time of the development stages is shown from left to right. Note however that this is often an iterative process and the actual development will not proceed linearly through these steps. The goal of rapid development is to make this cycle as efficient as possible by minimizing the iterations required for a design. If the x-axis of the diagram is thought of as time, the goal is to narrow the â€Å"V† as much as possible and thereby reduce development time. The y-axis of this diagram can be thought of as the level at which the system components are considered. Early on in the development, the requirements of the overall system must be considered. As the system is divided into sub-systems and components, the process becomes very low-level down to the point of loading code onto individual processors. Afterwards components are integrated and tested together until such time that the entire system can enter final production testing. Therefore the top of the diagram represents the high-level system view and the bottom of the diagram represents a very low-level view. Notes: †¢ V diagram describes lots of applications—derived from software development. Reason for shape, every phase of design requires a complimentary test phase. High-level to low-level view of application. †¢ This is a simplified version. †¢ Loop Back/ Iterative process, X-axis is time (sum up). Characteristics of Embedded System: †¢ An embedded system is any computer system hidden inside a product other than a computer †¢ There will encounter a numb er of difficulties when writing embedded system software in addition to those we encounter when we write applications – Throughput – Our system may need to handle a lot of data in a short period of time. Response–Our system may need to react to events quickly – Testability–Setting up equipment to test embedded software can be difficult – Debugability–Without a screen or a keyboard, finding out what the software is doing wrong (other than not working) is a troublesome problem – Reliability – embedded systems must be able to handle any situation without human intervention – Memory space – Memory is limited on embedded systems, and you must make the software and the data fit into whatever memory exists – Program installation – you will need special tools to get your oftware into embedded systems – Power consumption – Portable systems must run on battery power, and the software in th ese systems must conserve power – Processor hogs – computing that requires large amounts of CPU time can complicate the response problem – Cost – Reducing the cost of the hardware is a concern in many embedded system projects; software often operates on hardware that is barely adequate for the job. You read "Reid Based Prepaid Energy Mater" in category "Essay examples" †¢ Embedded systems have a microprocessor/ microcontroller and a memory. Some have a serial port or a network connection. They usually do not have keyboards, screens or disk drives. APPLICATIONS: 1. Military and aerospace embedded software applications 2. Communication Applications 3. Industrial automation and process control software CLASSIFICATION: †¢ Real Time Systems. †¢ RTS is one which has to respond to events within a specified deadline. †¢ A right answer after the dead line is a wrong answer RTS CLASSIFICATION: †¢ Hard Real Time Systems †¢ Soft Real Time System HARD REAL TIME SYSTEM: †¢ â€Å"Hard† real-time systems have very narrow response time. †¢ Example: Nuclear power system, Cardiac pacemaker. SOFT REAL TIME SYSTEM: â€Å"Soft† real-time systems have reduced constrains on â€Å"lateness† but still must operate very quickly and repeatable. †¢ Example: Railway reservation system – takes a few extra seconds the data remains valid. LANGUAGES USED: †¢ C †¢ C++ †¢ Java †¢ Linux †¢ Ada †¢ Assembly MPLAB FEATURES: MPLAB Integrated Development Environment (IDE) is a free, integrated toolset for the development of embedded applications employing Microchip’s PIC ® and dsPIC ® microcontrollers. MPLAB Integrated Development Environment (IDE) is a free, integrated toolset for the development of embedded applications employing Microchip’s PIC ® and dsPIC ® microcontrollers. MPLAB IDE runs as a 32-bit application on MS Windows ®, is easy to use and includes a host of free software components for fast application development and super-charged debugging. MPLAB IDE also serves as a single, unified graphical user interface for additional Microchip and third party software and hardware development tools. Moving between tools is a snap, and upgrading from the free software simulator to hardware debug and programming tools is done in a flash because MPLAB IDE has the same user interface for all tools. MPLAB IDE’s SIM, high speed software simulator for PIC and dsPIC (Digital Signal Processing PIC Microcontroller) devices with peripheral simulation, complex stimulus injection and register logging. CHAPTER 3 [pic] 3. 1 Block Diagram of RFID PREPAID energy meter BLOCK DIAGRAM 3. 2 Description of the Block Diagram The AC main Block is the power supply which is of single phase 230V ac. This should be given to step down transformer to reduce the 230V ac voltage to low voltage. i. e. , to 6V or 12V ac this value depends on the transformer inner winding. The output of the transformer is given to the rectifier circuit. This rectifier converts ac voltage to dc voltage. But the voltage may consist of ripples or harmonics. To avoid these ripples the output of the rectifier is connected to filter. The filter thus removes the harmonics. This is the exact dc voltage of the given specification. But the controller operates at 5V dc and the relays and driver operates at 12V dc voltage. So we need a regulator to reduce the voltage. 7805 regulator produces 5V dc. The 7805 regulator produces 5V dc and this voltage is given to PIC micro controller and sensors. The outputs of the sensors are also given to PIC micro controller. LCD, Keypad unit, SMART CARD read and write unit are connected to the controller. The controller reads the SMART CARD data from SMART CARD reader. The controller displays the data on LCD, depends upon the energy consumption the amount will be reduced. [pic] 3. 3 circuit diagram of RFID PREPAID energy meter: [pic] 3. 4 Circuit Description POWER SUPPLY: Power supply unit consists of Step down transformer, Rectifier, Input filter, Regulator unit, Output filter. The Step down Transformer is used to step down the main supply voltage from 230V AC to lower value. This 230 AC voltage cannot be used directly, thus it is stepped down. The Transformer consists of primary and secondary coils. To reduce or step down the voltage, the transformer is designed to contain less number of turns in its secondary core. The output from the secondary coil is also AC waveform. Thus the conversion from AC to DC is essential. This conversion is achieved by using the Rectifier Circuit/Unit. The Rectifier circuit is used to convert the AC voltage into its corresponding DC voltage. There are Half-Wave, Full-Wave and bridge Rectifiers available for this specific function. The most important and simple device used in Rectifier circuit is the diode. The simple function of the diode is to conduct when forward biased and not to conduct in reverse bias. The Forward Bias is achieved by connecting the diode’s positive with positive of the battery and negative with battery’s negative. The efficient circuit used is the Full wave Bridge rectifier circuit. The output voltage of the rectifier is in rippled form, the ripples from the obtained DC voltage are removed using other circuits available. The circuit used for removing the ripples is called Filter circuit. Capacitors are used as filter. The ripples from the DC voltage are removed and pure DC voltage is obtained. And also these capacitors are used to reduce the harmonics of the input voltage. The primary action performed by capacitor is charging and discharging. It charges in positive half cycle of the AC voltage and it will discharge in negative half cycle. Here we used 1000 µF capacitor. So it allows only AC voltage and does not allow the DC voltage. This filter is fixed before the regulator. Thus the output is free from ripples. Regulator regulates the output voltage to be always constant. The output voltage is maintained irrespective of the fluctuations in the input AC voltage. As and then the AC voltage changes, the DC voltage also changes. Thus to avoid this Regulators are used. Also when the internal resistance of the power supply is greater than 30 ohms, the output gets affected. Thus this can be successfully reduced here. The regulators are mainly classified for low voltage and for high voltage. Here we used 7805 positive regulators. It reduces the 6V dc voltage to 5V dc Voltage. The Filter circuit is often fixed after the Regulator circuit. Capacitor is most often used as filter. The principle of the capacitor is to charge and discharge. It charges during the positive half cycle of the AC voltage and discharges during the negative half cycle. So it allows only AC voltage and does not allow the DC voltage. This filter is fixed after the Regulator circuit to filter any of the possibly found ripples in the output received finally. Here we used 0. 1 µF capacitor. The output at this stage is 5V and is given to the Microcontroller Microcontroller and sensors are operated at 5V dc voltage. The output of the 7805 regulator is connected to PIC 16f877A microcontroller. Controller Circuit The PIC 16f877A microcontroller is a 40-pin IC. The first pin of the controller is MCLR pin and the 5V dc supply is given to this pin through 10K? resistor. This supply is also given to 11th pin directly. The 12th pin of the controller is grounded. A tank circuit consists of a 4 MHZ crystal oscillator and two 22pf capacitors is connected to 13th and 14th pins of the PIC. The circuit consists of MAX-232 IC. It is a 16-pin dual in package IC. The 11th and 12th pins of MAX-232 IC are connected to the 25th and 26th pins of the PIC microcontroller. These are receiver OUT and Transmitter IN pins respectively. LCD is connected to the RC0 to RD7 pins of the PIC microcontroller. 13th, 14th and 15th pins of the MAX-232 IC are connected to the smart card read Buffer. The Keypad unit connected to the RB0 to RB3 pins of the PIC micro controller. The keypad unit consists of 4 switches. One is for menu, second is Exit, third one is for Clear and the other is for Day Increment. MAX-232 IC is used to convert the voltage from 5V to 10V and 10V to 5V. This IC is used to communicate with the PC. It also acts as voltage converter. The LCD used here is to display the Attendance details. [pic] 3. 5 CIRCUIT OPERATION The input of the circuit is taken from the main. It is a single phase 230V ac voltage. This 230 AC voltage cannot be used directly, thus it is stepped down. The Step down Transformer is used to step down the main supply voltage from 230V AC to lower value. Because the microcontroller and sensors are operated at +5V dc voltage and relays and drivers will be operate at +12V dc voltage. So first this 230C AC voltage should be stepped down and then it should be converted to dc. After converting to dc it is applied to controller, sensors, relays and drivers. In this project we used 230/12V step down transformer. In this circuit we used two regulators. 7805 regulator for producing 5V dc, and 7812 regulators for 12V dc voltage. The output of 7805 regulators is given to PIC microcontroller and three sensors. The output of the 7812 regulator is connected to driver IC and a Relay. The main parts of this project are smart card and PIC micro controller. The coding will be installed to microcontroller through PIC Flash micro systems compiler unit. The crystal oscillator is used to generate the clock pulses to the PIC micro controller. The speed of the microcontroller depends upon the value of the crystal oscillator. In this project we used the 4 MHz crystal oscillator. Whenever recharged smart card shown in front of the reader the data from card will be read and send to controller through reader. The controller confirms whether it is old or new card. After this it will automatically open the lock to use EB power supply. If the wrong card shown, controller activate the alarm. Depends on the energy consumption the amount will reduced by the controller, when its come to below zero the controller automatically cut down the EB power supply through driver unit. In the driver unit ULN2003 is used as driver to driver the 12v relay. We inserted the process into the controller through coding. Coding was developed in Embedded ‘C’ Language. CHAPTER 4 [pic] 4. 1 Hardware Requirements: 1. Power supply unit 2. Microcontroller 3. MAX-232 IC 4. LCD 5. Keypad Unit 4. 2 POWER SUPPLY UNIT: Circuit Diagram [pic] Power supply unit consists of following units i) Step down transformer ii) Rectifier unit iii) Input filter iv) Regulator unit v) Output filter 4. 3. 1 Stepdown transformer: The Step down Transformer is used to step down the main supply voltage from 230V AC to lower value. This 230 AC voltage cannot be used directly, thus it is stepped down. The Transformer consists of primary and secondary coils. To reduce or step down the voltage, the transformer is designed to contain less number of turns in its secondary core. The output from the secondary coil is also AC waveform. Thus the conversion from AC to DC is essential. This conversion is achieved by using the Rectifier Circuit/Unit. 4. 3. 2 Rectifier Unit: The Rectifier circuit is used to convert the AC voltage into its corresponding DC voltage. There are Half-Wave, Full-Wave and bridge Rectifiers available for this specific function. The most important and simple device used in Rectifier circuit is the diode. The simple function of the diode is to conduct when forward biased and not to conduct in reverse bias. The Forward Bias is achieved by connecting the diode’s positive with positive of the battery and negative with battery’s negative. The efficient circuit used is the Full wave Bridge rectifier circuit. The output voltage of the rectifier is in rippled form, the ripples from the obtained DC voltage are removed using other circuits available. The circuit used for removing the ripples is called Filter circuit. 4. 3. 3 Input Filter: Capacitors are used as filter. The ripples from the DC voltage are removed and pure DC voltage is obtained. And also these capacitors are used to reduce the harmonics of the input voltage. The primary action performed by capacitor is charging and discharging. It charges in positive half cycle of the AC voltage and it will discharge in negative half cycle. So it allows only AC voltage and does not allow the DC voltage. This filter is fixed before the regulator. Thus the output is free from ripples. 4. 3. 4 Regulator unit: [pic] 7805 Regulator Regulator regulates the output voltage to be always constant. The output voltage is maintained irrespective of the fluctuations in the input AC voltage. As and then the AC voltage changes, the DC voltage also changes. Thus to avoid this Regulators are used. Also when the internal resistance of the power supply is greater than 30 ohms, the output gets affected. Thus this can be successfully reduced here. The regulators are mainly classified for low voltage and for high voltage. Further they can also be classified as: i) Positive regulator 1— input pin 2— ground pin 3— output pin It regulates the positive voltage. ii) Negative regulator — ground pin 2— input pin 3— output pin It regulates the negative voltage. 4. 3. 5 Output Filter: The Filter circuit is often fixed after the Regulator circuit. Capacitor is most often used as filter. The principle of the capacitor is to charge and discharge. It charges during the positive half cycle of the AC voltage and discharges during the negative half cycle. So it al lows only AC voltage and does not allow the DC voltage. This filter is fixed after the Regulator circuit to filter any of the possibly found ripples in the output received finally. Here we used 0. 1 µF capacitor. The output at this stage is 5V and is given to the Microcontroller. 4. 4 MICRO CONTROLLER: A computer-on-a-chip is a variation of a microprocessor which combines the processor core (CPU), some memory, and I/O (input/output) lines, all on one chip. The computer-on-a-chip is called the microcomputer whose proper meaning is a computer using a (number of) microprocessor(s) as its CPUs, while the concept of the microcomputer is known to be a microcontroller. A microcontroller can be viewed as a set of digital logic circuits integrated on a single silicon chip. This chip is used for only specific applications. . 4. 1 ADVANTAGES OF USING A MICROCONTROLLER OVER MICROPROCESSOR: A designer will use a Microcontroller to 1. Gather input from various sensors 2. Process this input into a set of actions 3. Use the output mechanisms on the Microcontroller to do something useful 4. RAM and ROM are inbuilt in the MC. 5. Cheap compared to MP. 6. Multi machine control is possible simultaneously. Example s: 8051 (ATMAL), PIC (Microchip), Motorola (Motorola), ARM Processor, Applications: Cell phones, Computers, Robots, Interfacing to two pc’s. 4. 4. 2 Microcontroller Core Features: †¢ High-performance RISC CPU. Only 35 single word instructions to learn. †¢ All single cycle instructions except for program branches which are two cycle. †¢ Operating speed: DC – 20 MHz clock input DC – 200 ns instruction cycle. †¢ Up to 8K x 14 words of FLASH Program Memory, Up to 368 x 8 bytes of Data Memory (RAM) Up to 256 x 8 bytes of EEPROM data memory. †¢ Pin out compatible to the PIC16C73B/74B/76/77 †¢ Interrupt capability (up to 14 sources) †¢ Eight level deep hardware stack †¢ Direct, indirect and relative addressing modes. †¢ Power-on Reset (POR). †¢ Power-up Timer (PWRT) and Oscillator Start-up Timer (OST). Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation. †¢ Programmable code-protection. à ¢â‚¬ ¢ Power saving SLEEP mode. †¢ Selectable oscillator options. †¢ Low-power, high-speed CMOS FLASH/EEPROM technology. †¢ Fully static design. †¢ In-Circuit Serial Programming (ICSP) . †¢ Single 5V In-Circuit Serial Programming capability. †¢ In-Circuit Debugging via two pins. †¢ Processor read/write access to program memory. †¢ Wide operating voltage range: 2. 0V to 5. 5V. †¢ High Sink/Source Current: 25 mA. †¢ Commercial and Industrial temperature ranges. †¢ Low-power consumption. In this project we used PIC 16f877A microcontroller. PIC means Peripheral Interface Controller. The PIC family having different series. The series are 12- Series, 14- Series, 16- Series, 18- Series, and 24- Series. We used 16 Series PIC microcontroller. 3. PIC MICROCONTROLLER 16F877A 1. INTRODUCTION TO PIC MICROCONTROLLER 16F877A The PIC 16f877A microcontroller is a 40-pin IC. The first pin of the controller is MCLR pin and the 5V dc supply is given to this pin through 10K? resistor. This supply is also given to 11th pin directly. The 12th pin of the controller is grounded. A tank circuit consists of a 4 MHZ crystal oscillator and two 22pf capacitors is connected to 13th and 14th pins of the PIC. 2. FEATURES OF PIC MICROCONTROLLER 16F877A †¢ Operating frequency: DC-20Mhz. †¢ Flash program memory (14 bit words):8K †¢ Data memory (in bytes): 368 †¢ EEPROM Data memory (in bytes):256 †¢ Interrupts: 15 †¢ I/o ports: A, B, C, D, E †¢ Timers: 3 †¢ Analog comparators: 2 †¢ Instructions: 35 4. 3. 3 pin diagram of pic 16f874a/877a: [pic] 4. 3. 4 FUNCTIONAL BLOCK DIAGRAM OF PIC 16F877A [pic] 4. 4 LCD Display: Liquid crystal display (LCD) has material which combines the properties of both liquid and crystals. They have a temperature range within which the molecules are almost as mobile as they would be in a liquid, but are grouped together in an order form similar to a crystal. LCD DISPLAY: [pic] More microcontroller devices are using ‘smart LCD’ displays to output visual information. The following discussion covers the connection of a Hitachi LCD display to a PIC microcontroller. LCD displays designed around Hitachi’s LCD HD44780 module, are inexpensive, easy to use, and it is even possible to produce a readout using the 8 x 80 pixels of the display. Hitachi LCD displays have a standard ASCII set of characters plus Japanese, Greek and mathematical symbols. For an 8-bit data bus, the display requires a +5V supply plus 11 I/O lines. For a 4-bit data bus it only requires the supply lines plus seven extra lines. When the LCD display is not enabled, data lines are tri-state which means they are in a state of high impedance (as though they are disconnected) and this means they do not interfere with the operation of the microcontroller when the display is not being addressed. The LCD also requires 3 â€Å"control† lines from the microcontroller. Enable (E) |This  line allows access to the display through R/W and RS lines. When this line is low, the LCD is disabled and | | |ignores signals from R/W and RS. When (E) line is high, the LCD checks the state of the two control lines and | | |responds accordingly. | |Read/Write (R/W) |This line determines the direction of data between the LCD and microcontroller. When it is low, data is written | | |to the LCD. When it is high, data is read from the LCD. |Register select (RS) |With the help of this line, the LCD interprets the type of data on data lines. When it is low, an instruction is | | |being written to the LCD. When it is high, a character is being written to the LCD. | Logic status on control lines: E  Ã‚  Ã‚  Ã‚   0 Access to LCD disabled 1 Access to LCD enabled R/W 0 Writing data to LCD 1 Reading data from LCD RS  Ã‚  Ã‚   0 Instruction 1 Character Writing data to the LCD is done in several steps: Set R/W bit to low Set RS bit to logic 0 or 1 (instruction or character) Set data to data lines (if it is writing) Set E line to high Set E line to low Read data from data lines (if it is reading). Reading data from the LCD is done in the same way, but control line R/W has to be high. When we send a high to the LCD, it will reset and wait for instructions. Typical instructions sent to LCD display after a reset are: turning on a display, turning on a cursor and writing characters from left to right. When the LCD is initialized, it is ready to continue receiving data or instructions. If it receives a character, it will write it on the display and move the cursor one space to the right. The Cursor marks the next location where a character will be written. When we want to write a string of characters, first we need to set up the starting address, and then send one character at a time. Characters that can be shown on the display are stored in data display (DD) RAM. The size of DDRAM is 80 bytes. |The LCD display also possesses 64 bytes of Character-Generator (CG)|[pic] | |RAM. This memory is used for characters defined by the user. Data | | |in CG RAM is represented as an 8-bit character bit-map. Each | | |character takes up 8 bytes of CG RAM, so the total number of | | |characters, which the user can define, is eight. In order to read | | |in the character bit-map to the LCD display, we must first set the | | |CG RAM address to starting point (usually 0), and then write data | | |to the display. The definition of a ‘special’ character is given in| | |the picture. | | Before we access DD RAM after defining a special character, the program must set the DD RAM address. Writing and reading data from any LCD memory is done from the last address which was set up using set-address instruction. Once the address of DD RAM is set, a new written character will be displayed at the appropriate place on the screen. Until now we discussed the operation of writing and reading to an LCD as if it were an ordinary memory. But this is not so. The LCD controller needs 40 to 120 microseconds (uS) for writing and reading. Other operations can take up to 5 mS. During that time, the microcontroller can not access the LCD, so a program needs to know when the LCD is busy. We can solve this in two ways. One way is to check the BUSY bit found on data line D7. This is not the best method because LCD’s can get stuck, and program will then stay forever in a loop checking the BUSY bit. The other way is to introduce a delay in the program. The delay has to be long enough for the LCD to finish the operation in process. Instructions for writing to and reading from an LCD memory are shown in the previous table. At the beginning we mentioned that we needed 11 I/O lines to communicate with an LCD. However, we can communicate with an LCD through a 4-bit data bus. Thus we can reduce the total number of communication lines to seven. The wiring for connection via a 4-bit data bus is shown in the diagram below. In this example we use an LCD display with 2Ãâ€"16 characters, labeled LM16X212 by Japanese maker SHARP. The message ‘character’ is written in the first row: and two special characters ‘~’ and ‘}’ are displayed. In the second row we have produced the word ‘mikroElektronika’. INTERFACING PIC MICROCONTROLLER TO LCD: [pic] 4. 5 DESIGN OF EMBEDDED SYSTEM Like every other system development design cycle embedded system too have a design cycle. The flow of the system will be like as given below. For any design cycle these will be the implementation steps. From the initial state of the project to the final fabrication the design considerations will be taken like the software consideration and the hardware components, sensor, input and output. The electronics usually uses either a microprocessor or a microcontroller. Some large or old systems use general-purpose mainframe computers or minicomputers. User Interfaces: User interfaces for embedded systems vary widely, and thus deserve some special comment. User interface is the ultimate aim for an embedded module as to the user to check the output with complete convenience. One standard interface, widely used in embedded systems, uses two buttons (the absolute minimum) to control a menu system (just to be clear, one button should be â€Å"next menu entry† the other button should be â€Å"select this menu entry†). Another basic trick is to minimize and simplify the type of output. Designs sometimes use a status light for each interface plug, or failure condition, to tell what failed. A cheap variation is to have two light bars with a printed matrix of errors that they select- the user can glue on the labels for the language that he speaks. For example, most small computer printers use lights labeled with stick-on labels that can be printed in any language. In some markets, these are delivered with several sets of labels, so customers can pick the most comfortable language. In many organizations, one person approves the user interface. Often this is a customer, the major distributor or someone directly responsible for selling the system. PLATFORM: There are many different CPU architectures used in embedded designs such as ARM, MIPS, Coldfire/68k, PowerPC, X86, PIC, 8051, Atmel AVR, H8, SH, V850, FR-V, M32R etc. This in contrast to the desktop computer market, which as of this writing (2003) is limited to just a few competing architectures, mainly the Intel/AMD x86, and the Apple/Motorola/IBM PowerPC, used in the Apple Macintosh. With the growing acceptance of Java in this field, there is a tendency to even further eliminate the dependency on specific CPU/hardware (and OS) requirements. Standard PC/104 is a typical base for small, low-volume embedded and rugged zed system design. These often use DOS, Linux or an embedded real-time operating system such as QNX or Inferno. A common configuration for very-high-volume embedded systems is the system on a chip, an application-specific integrated circuit, for which the CPU was purchased as intellectual property to add to the IC’s design. A related common scheme is to use a field-programmable gate array, and program it with all the logic, including the CPU. Most modern FPGAs are designed for this purpose. Tools: Like typical computer programmers, embedded system designers use compilers, assemblers, and debuggers to develop embedded system software. However, they also use a few tools that are unfamiliar to most programmers. Software tools can come from several sources: †¢ Software companies that specialize in the embedded market. †¢ Ported from the GNU software development tools. Sometimes, development tools for a personal computer can be used if the embedded processor is a close relative to a common PC processor. Embedded system designers also use a few software tools rarely used by typical computer programmers. One common tool is an â€Å"in-circuit emulator† (ICE) or, in more modern designs, an embedded debugger. This debugging tool is the fundamental trick used to develop embedded code. It replaces or plugs into the microprocessor, and provides facilities to quickly load and debug experimental code in the system. A small pod usually provides the special electronics to plug into the system. Often a personal computer with special software attaches to the pod to provide the debugging interface. Another common tool is a utility program (often home-grown) to add a checksum or CRC to a program, so it can check its program data before executing it. An embedded programmer that develops software for digital signal processing often has a math workbench such as MathCad or Mathematica to simulate the mathematics. Less common are utility programs to turn data files into code, so one can include any kind of data in a program. A few projects use Synchronous programming languages for extra reliability or digital signal processing. DEBUGGING: Debugging is usually performed with an in-circuit emulator, or some type of debugger that can interrupt the microcontroller’s internal microcode. The microcode interrupt lets the debugger operate in hardware in which only the CPU works. The CPU-based debugger can be used to test and debug the electronics of the computer from the viewpoint of the CPU. This feature was pioneered on the PDP-11. As the complexity of embedded systems grows, higher level tools and operating systems are migrating into machinery where it makes sense. For example, cell phones, personal digital assistants and other consumer computers often need significant software that is purchased or provided by a person other than the manufacturer of the electronics. In these systems, an open programming environment such as Linux, OSGi or Embedded Java is required so that the third-party software provider can sell to a large market. OPERATING SYSTEM: Embedded systems often have no operating system, or a specialized embedded operating system (often a real-time operating system), or the programmer is assigned to port one of these to the new system. BUILT- IN SELF- TEST: Most embedded systems have some degree or amount of built-in self-test. There are several basic types. 1. Testing the computer. 2. Test of peripherals. 3. Tests of power. 4. Communication tests. 5. Cabling tests. 6. Rigging tests. 7. Consumables test. 8. Operational test. 9. Safety test. START UP: All embedded systems have start-up code. Usually it disables interrupts, sets up the electronics, tests the computer (RAM, CPU and software), and then starts the application code. Many embedded systems recover from short-term power failures by restarting (without recent self-tests). Restart times under a tenth of a second are common. Many designers have found a few LEDs useful to indicate errors (they help troubleshooting). A common scheme is to have the electronics turn on all of the LED(s) at reset (thereby proving that power is applied and the LEDs themselves work), whereupon the software changes the LED pattern as the Power-On Self Test executes. After that, the software may blink the LED(s) or set up light patterns during normal operation to indicate program execution progress or errors. This serves to reassure most technicians/engineers and some users. An interesting exception is that on electric power meters and other items on the street, blinking lights are known to attract attention and vandalism. CHAPTER 5 [pic] 5. 1 Software Tools: 1. MPLAB 2. Protel 3. Propic 4. HI-Tech PIC C Compiler 5. 2 MPLAB Integration: MPLAB Integrated Development Environment (IDE) is a free, integrated toolset for the development of embedded applications employing Microchip’s PIC micro and dsPIC microcontrollers. MPLAB IDE runs as a 32-bit application on MS Windows, is easy to use and includes a host of free software components for fast application development and super-charged debugging. MPLAB IDE also serves as a single, unified graphical user interface for additional Microchip and third party software and hardware development tools. Moving between tools is a snap, and upgrading from the free simulator to MPLAB ICD 2 or the MPLAB ICE emulator is done in a flash because MPLAB IDE has the same user interface for all tools. Choose MPLAB C18, the highly optimized compiler for the PIC18 series microcontrollers, or try the newest Microchip’s language tools compiler, MPLAB C30, targeted at the high performance PIC24 and dsPIC digital signal controllers. Or, use one of the many products from third party language tools vendors. They integrate into MPLAB IDE to function transparently from the MPLAB project manager, editor and compiler. 5. 3 INTRODUCTION TO EMBEDDED ‘C’: Ex: Hitec – c, Keil – c HI-TECH Software makes industrial-strength software development tools and C compilers that help software developers write compact, efficient embedded processor code. For over two decades HI-TECH Software has delivered the industry’s most reliable embedded software development tools and compilers for writing efficient and compact code to run on the most popular embedded processors. Used by tens of thousands of customers including General Motors, Whirlpool, Qualcomm, John Deere and many others, HI-TECH’s reliable development tools and C compilers, combined with world-class support have helped serious embedded software programmers to create hundreds of breakthrough new solutions. Whichever embedded processor family you are targeting with your software, whether it is the ARM, PICC or 8051 series, HI-TECH tools and C compilers can help you write better code and bring it to market faster. HI-TECH PICC is a high-performance C compiler for the Microchip PIC micro 10/12/14/16/17 series of microcontrollers. HI-TECH PICC is an industrial-strength ANSI C compiler – not a subset implementation like some other PIC compilers. The PICC compiler implements full ISO/ANSI C, with the exception of recursion. All data types are supported including 24 and 32 bit IEEE standard floating point. HI-TECH PICC makes full use of specific PIC features and using an intelligent optimizer, can generate high-quality code easily rivaling hand-written assembler. Automatic handling of page and bank selection frees the programmer from the trivial details of assembler code. 5. 4 Embedded C Compiler: ? ANSI C – full featured and portable Reliable – mature, field-proven technology ? Multiple C optimization levels ? An optimizing assembler ? Full linker, with overlaying of local variables to minimize RAM usage ? Comprehensive C library with all source code provided ? Includes support for 24-bit and 32-bit IEEE floating point and 32-bit long data types ? Mixed C and assembler programming ? Unlimite d number of source files ? Listings showing generated assembler ? Compatible – integrates into the MPLAB IDE, MPLAB ICD and most 3rd-party development tools ? Runs on multiple platforms: Windows, Linux, UNIX, Mac OS X, Solaris Embedded Development Environment: PICC can be run entirely from the. This environment allows you to manage all of your PIC projects. You can compile, assemble and link your embedded application with a single step. Optionally, the compiler may be run directly from the command line, allowing you to compile, assemble and link using one command. This enables the compiler to be integrated into third party development environments, such as Microchip’s MPLAB IDE. 5. 5 Embedded system tools: 5. 5. 1 Assembler: An assembler is a computer program for translating assembly language — essentially, a mnemonic representation of machine language — into object code. A cross assembler (see cross compiler) produces code for one type of processor, but runs on another. The computational step where an assembler is run is known as assembly time. Translating assembly instruction mnemonics into opcodes, assemblers provide the ability to use symbolic names for memory locations (saving tedious calculations and manually updating addresses when a program is slightly modified), and macro facilities for performing textual substitution — typically used to encode common short sequences of instructions to run inline instead of in a subroutine. Assemblers are far simpler to write than compilers for high-level languages. Assembly language has several benefits: †¢ Speed: Assembly language programs are generally the fastest programs around. †¢ Space: Assembly language programs are often the smallest. †¢ Capability: You can do things in assembly which are difficult or impossible in High level languages. †¢ Knowledge: Your knowledge of assembly language will help you write better programs, even when using High level languages. An example of an assembler we use in our project is RAD 51. . 5. 2 Simulator: Simulator is a machine that simulates an environment for the purpose of training or research. We use a UMPS simulator for this purpose in our project. 5. 5. 3 UMPS: Universal microprocessor program simulator simulates a microcontroller with its external environment. UMPS is able to simulate external components connected to the microcontroller. Then, debug step is dramatically reduced. UMPS is not dedicated to only one microcontroller family, it can simulate all kind of microcontrollers. The main limitation is to have less than 64K-Bytes of RAM and ROM space and the good microcontroller library. UMPS provide all the facilities other low-cost simulator does not have. It offers the user to see the â€Å"real effect† of a program and a way to change the microcontroller family without changing IDE. UMPS provide a low-cost solution to the problems. UMPS is really the best solution to your evaluation. 5. 5. 4 UMPS key features: -The speed, UMPS can run as fast as 1/5 the real microcontroller speed. No need to wait 2 days to see the result of a LCD routine access. All the microcontroller parts are simulated, interrupts, communication protocol, parallel handshake, timer and so on. – UMPS have an integrated assembler/disassembler and debugger. It is able to accept an external assembler or compiler. It has a text editor which is not limited to 64K-bytes and shows keyword with color. It can also communicate with an external compiler to integrate all the debug facilities you need. – UMPS is universal, it can easily be extended to other microcontroller with a library. Ask us for toolkit development. – External resource simulation is not limited. It can be extended to your proper needs by writing your own DLL. – UMPS allows you to evaluate at the lowest cost the possibility to build a microcontroller project without any cable. – UMPS include a complete documentation on each microcontroller which describe special registers and each instruction 5. 5. 5 Compiler: A compiler is a program that reads a program in one language, the source language and translates into an equivalent program in another language, the target language. The translation process should also report the presence of errors in the source program. Source Program | |  Compiler | |Target Program | |   |   |v |   |   | |   |   |Error Messages |   |   | There are two parts of compilation. The analysis part breaks up the source program into constant piece and creates an intermediate representation of the source program. The synthesis part constructs the desired target program from the intermediate representation. 5. 5. 6 The cousins of the compiler are: 1. Preprocessor. 2. Assembler. 3. Loader and Link-editor. A naive approach to that front end might run the phases serially. 1. Lexical analyzer takes the source program as an input and produces a long string of tokens. 2. Syntax Analyzer takes an out of lexical analyzer and produces a large tree. Semantic analyzer takes the output of syntax analyzer and produces another tree. Similarly, intermediate code generator takes a tree as an input produced by semantic analyzer and produces  intermediate code 5. 5. 7 Phases of compiler: The compiler has a number of phases plus symbol table manager and an error handler.    |   |Input Source Program |   |   | |   |   |v |   |   | |   |   |Lexical Analyzer |   |   | |   |   |v |   |   | |   |   |Syntax Analyzer |   |   | |   |   |v |   |   | |Symbol Table Manager |   |Semantic Analyzer |   |  Error Handler | |   |   |v |   |   | |   |   |Intermediate Code |   |   | | | |Generator | | | |   |   |v |   |   | |   | Code Optimizer |   |   | |   |   |v |   |   | |   |   |Code Generator |   |   | |   |   |v |   |   | |   |   |Out Target Program |   |   | 5. 6 FABRICATION DETAILS The fabrication of one demonstration unit is carried out in the following sequence. ? Finalizing the total circuit diagram, listing out the components and sources of procurement. ? Procuring the components, testing the components and screening the components. ? Making layout, repairing the interconnection diagram as per the circuit diagram. Assembling the components as per the component layout and circuit diagram and soldering components. ? Integrating the total unit, intertwining the unit and final testing the unit. CHAPTER 7 CONCLUSION The System RFID BASED ENERGY is developed and operated successfully in the laboratory. The prepaid energy meter was working properly and perfectly. The circuit having potential and current transformers which gives the power c onsumption in analog form. This is converted to digital and the converted one is again converted into KWH form i. e one unit. According to the tariff rates stored in the microcontroller, The consumed units and cost are displayed on the LCD. Future enhancements: Our project is just to caluculate the reading i. consumed power and caluculate the cost and then display the cost on the LCD. In future this circuit can also be used as a prepaid energy meter using a smart type arrangement. For we want to add a smart card reader and relay in extra. Due to this every customer has a smart card with some credits and after completing these credits we again go to EB and recharge the card. The energy meter reading can be send to the EB by implementing small kind of SCADA system, using this the readings can be straightly monitor by the EB. CODE: #include;pic. h; #include†lcd_16x4. c† __CONFIG(XT WDTDIS PWRTDIS BORDIS LVPDIS WRTEN DEBUGDIS DUNPROT UNPROTECT); void init(); oid ADC_ VTG_CT(); void ADC_VTG_CT1(); void disp_meter(); void delay(); write_eeprom(unsigned char add,unsigned int data); unsigned int read_eeprom(unsigned char add); unsigned int i, j,bal,gsmcost, curt,vltg,crt,tmp,tmp1,k,fcrt,escp,cap_time,testeng,Engeeprom,tempvalue,ROTabv100=0,ROTupt100=0; bank2 unsigned char mill_count,tick1=0,h[15],rec=0; bank1 unsigned char sec, min,hr,check1,VHUDS,VTENS,VONES,CHUDS, CTENS, CONES,COLACK,COTENTH, ETHOD,EHUDS,ETENS,EONES,COTHOD,COHUDS,COTENS,COONES,EEONES,EETHOD,EETENS,EEHUDS,EELACK,EETENTH,unteeprom,unit,var=0,u11,u12,u13; unsigned char tm,tt,th,ctl; float cpwt1,cpwt2,Energy,Cost_engy,Cost; bit check_dev,card_present; ank2 unsigned char qt,msg,n,set1=0,set2=0,set3=0,set,set4=0,tab,cap,cap1,cap2,eeprom_erase_cnt; unsigned interrupt isr(void) { if(TMR1IF) { TMR1IF=0; mill_count++; //mill_count, scan_count, keypress, check, keyok,key if(mill_count;=25) { mill_count=0; sec++; if(sec;=59) { tick1=1; sec =0; ctl=1; min++; if(min;59) { min=0; hr++; if(hr;23) { hr=0; } } } }//mill_count }//TMR1IF if(RCIF==1) { h[rec]=RCREG; rec++; if(rec==12) { card_present=1; rec=0; } RCIF=0; } } void main() { init(); RC4=0; while(1) { lcd_move(0,0); lcd_puts(â€Å"Energy Meter†); RC4=0; if(card_present==1) { lcd_move(1,0); lcd_puts(â€Å"Recharged:†); if(h[9]==51) { lcd_move(1,10); lcd_puts(â€Å"Rs. 100†); or(j=0;j;=45000;j++); for(j=0;j;=45000;j++); gsmcost= 100; set1=1; card_present==0; lcd_clear(); } if(h[9]==56) { lcd_move(1,10); lcd_puts(â€Å"Rs. 50 â€Å"); for(j=0;j;=45000;j++); for(j=0;j;=45000;j++); gsmcost= 50; set1=1; card_present==0; lcd_clear(); } } while(set1==1) // SW==1) { //while(SW==1); lcd_move(0,0); lcd_puts(â€Å"Energy Meter†); COLACK =read_eeprom(0x00); COTENTH =read_eeprom(0x01); COTHOD =read_eeprom(0x02); COHUDS =read_eeprom(0x03); COTENS =read_eeprom(0x04); COONES =read_eeprom(0x05); Engeeprom = ((COLACK*100000)+(COTENTH*10000)+(COTHOD*1000)+(CHUDS *100)+(COTENS *10)+COONES); unteeprom =read_ee prom(0x06); ROTupt100 =read_eeprom(0x07); ROTabv100 =read_eeprom(0x08); disp_meter(); RC4=1; DelayMs(10); ADC_VTG_CT(); } while(set2) { lcd_move(0,0); //lcd_putn(check1); disp_meter(); ADC_VTG_CT1(); lcd_move(0,0); lcd_puts(â€Å"vtg:†); lcd_write(VHUDS+0x30); lcd_write(VTENS+0x30); lcd_write(VONES+0x30); lcd_move(0,8); lcd_puts(â€Å"crt:†); lcd_write(CHUDS+0x30); lcd_puts(â€Å". â€Å"); lcd_write(CTENS+0x30); lcd_write(CONES+0x30); RC4=1; DelayMs(10); if(curt) { tm = min – cap_time; //check1=1; if(min ; 58) { th++; } tt = (th*60)+tm; if(ctl==1) { ctl=0; //check1=2; Energy = ((vltg * curt *(float)tt)/100000); Energy = Energy*1000; testeng = (int)Energy; Energy = Energy/1000; Cost = Energy * cpwt1; Cost_engy = Cost + Cost_engy; bal = gsmcost – Cost_engy ; Cost_engy = Cost_engy*1000; Engeeprom = (int)Cost_engy; //bal = gsmcost – Engeeprom ; fcrt =bal; COLACK = fcrt/100000; fcrt=fcrt%100000; COTENTH=fcrt/10000; fcrt=fcrt%10000; COTHOD=fcrt/1000; fcrt=fcrt%1000; COHUDS=fcrt/100; fcrt=fcrt%100; COTENS=fcrt/10; fcrt=fcrt%10; COONES=fcrt; write_eeprom(0x00,COLACK); write_eeprom(0x01,COTENTH); write_eeprom(0x02,COTHOD); write_eeprom(0x03,COHUDS); write_eeprom(0x04,COTENS); write_eeprom(0x05,COONES); DelayMs(2); Cost_engy = Cost_engy/1000; if(Energy;0. 900) { Energy = 0; unit++; unteeprom = unit; write_eeprom(0x06,unteeprom); DelayMs(2); if(unit==100) { cpwt1 = cpwt2; nit = 0; } } } } else { set1=1; set2=0; lcd_clear(); } /*if(SW==1) { while(SW==1); RC4=0; set1=0; set2=0; lcd_clear(); } */ }//while(set2) }//while(1) }//main() void init() { TRISA = 0xFF; TRISB = 0xF0; TRISC = 0x80; PORTB = 0x00; ADCON1=0X82; GIE=PEIE=TMR1IE=RCIE=1; TMR1L=0X17; TMR1H=0XFC; SPBRG=25; BRGH=1; RCSTA=0X90; TXSTA=0X24; cpwt1 = . 4; Cost_engy = 0; unit = 0; unteeprom = 0; Engeeprom = 0; eeprom_erase_cnt=read_eeprom(0x10); if(eeprom_erase_cnt;5) { eeprom_erase_cnt=0; write_eeprom(0x10,0); write_eeprom(0x00,0); write_eeprom(0x01,0); write_eeprom(0x02,0); write_eeprom(0x03,0); write_eeprom(0x04,0); write_eeprom(0x05,0); } else { eprom_erase_cnt++; write_eeprom(0x10,eeprom_erase_cnt); } lcd_init(); //set1=1; T1CON=0X01; DelayMs(10); } void disp_meter() { if(set1) { lcd_move(1,0); lcd_puts(â€Å"U:†); lcd_putn(unteeprom); } if(set2) { fcrt =testeng; ETHOD=fcrt/1000; fcrt=fcrt%1000; EHUDS=fcrt/100; fcrt=fcrt%100; ETENS=fcrt/10; fcrt=fcrt%10; EONES=fcrt; lcd_move(1,0); lcd_puts(â€Å"E:†); lcd_write(ETHOD+0x30); lcd_puts(â€Å". â€Å"); lcd_write(EHUDS+0x30); lcd_write(ETENS+0x30); lcd_write(EONES+0x30); } lcd_move(1,8); lcd_puts(â€Å"C:†); if(COLACK) { lcd_write(COLACK+0x30); lcd_write(COTENTH+0x30); lcd_write(COTHOD+0x30); } else if(COTENTH) { lcd_write( COTENTH+0x30); lcd_write(COTHOD+0x30); //lcd_puts(â€Å". ); lcd_write(COHUDS+0x30); lcd_write(COTENS+0x30); //lcd_write(COONES+0x30); } else { lcd_write(COTHOD+0x30); lcd_puts(â€Å". â€Å"); lcd_write(COHUDS+0x30); lcd_write(COTENS+0x30); lcd_write(COONES+0x30); } /*********************AT COMMANDS********gsm energy meter coding********* if(tick1==1) { tick1=0; u11=unteeprom/100; u12=(unteeprom%100)/10; u13=unteeprom%10; sendtopc1(â€Å"AT†); TXREG=13; while(! TXREG); delay(); for(k=0; k=40000; k++); sendtopc1(â€Å"AT+CMGF=1†); TXREG=13; while(! TXREG); delay(); for(k=0; k=40000; k++); sendtopc1(â€Å"AT+CMGS=†); TXREG='†Ã¢â‚¬Ëœ; while(! TXREG); sendtopc1(â€Å"9738469†); // sendtopc1(â€Å"256†); //sendtopc1(â€Å"†Ã¢â‚¬ ); TXREG='†Ã¢â‚¬Ëœ; hile(! TRMT); delay(); TXREG=13;//FOR LINE FEED while(! TXREG); for(k=0; k=4000; k++); sendtopc1(â€Å"service no:0695 â€Å"); //sendtopc_var(); sendtopc1(â€Å"COST Rs. â€Å"); sendtopc_var(); sendtopc1(† UNITS:†); sendtopc_var1(); TXREG=26;//FOR CTRL+Z while(! TXREG); for(k=0; k=400; k++); }*/ } void ADC_VTG_CT() { float xchg; /**** Temperature *****/ ADCON0 = 0x81;//ADC Ch = 0 DelayMs(1); ADGO=1; while(ADGO); //status check tmp=ADRESH*256+ADRESL; crt=vltg =tmp/2; VHUDS=crt/100; crt=crt%100; VTENS=crt/10; crt=crt%10; VONES=crt; DelayMs(5); /****** LDR ******/ ADCON0 = 0x89;//ADC Ch = 1 DelayMs(1); ADGO=1; while(ADGO); //status check mp1=ADRESH*256+ADRESL; crt=curt = tmp1/2; CHUDS=crt/100; crt=crt%100; CTENS=crt/10; crt=crt%10; CONES=crt; DelayMs(5); if(curt) { cap_time= min; set1=0; set2=1; xchg = (float)Engeeprom/1000; Cost_engy = xchg; if(ROTabv100 || ROTupt100) { cpwt1= (float)ROTupt100*0. 1; cpwt2= (float)ROTabv100*0. 1; } else { cpwt1=. 4; cpwt2=. 7; } lcd_clear(); } } void ADC_VTG_CT1() { /**** Temperature *****/ ADCON0 = 0x81;//ADC Ch = 0 DelayMs(1); ADGO=1; while(ADGO); //status check tmp=ADRESH*256+ADRESL; crt=vltg =tmp/2; VHUDS=crt/1 00; crt=crt%100; VTENS=crt/10; crt=crt%10; VONES=crt; DelayMs(5); /****** LDR ******/ ADCON0 = 0x89;//ADC Ch = 1 DelayMs(1); ADGO=1; hile(ADGO); //status check tmp1=ADRESH*256+ADRESL; crt=curt = tmp1/2; CHUDS=crt/100; crt=crt%100; CTENS=crt/10; crt=crt%10; CONES=crt; } write_eeprom(unsigned char add, unsigned int data) { EEADR=add; EEDATA=data; EEPGD = 0; WREN=1; GIE=0; EECON2=0X55; EECON2=0XAA; WR=1; while(WR); GIE=1; WREN=0; } unsigned int read_eeprom(unsigned char add) { EEADR = add; EEPGD = 0; RD=1; //tempvalue=EEDATA; return(EEDATA); } void delay() { for(j=0;j=250;j++); } Bibliography: BOOKS: ? Customizing and programming ur pic microcontroller- Myke Predcko ? Complete guide to pic microcontroller -e-book ? C programming for embedded systems- Kirk Zurell Teach yourself electronics and electricity- Stan Giblisco ? Embedded Microcomputer system- onathan w. Valvano(2000) ? Embedded PIC microcontroller- John Peatman Web sites: †¢ Microchips. com †¢ http://www. mikroelektr onika. co. yu/english/product/books/PICbook/0_Uvod. htm †¢ how stuff works. com APPENDIX – A CODING Installing coding into PIC microcontroller: 1. Write the program in MPLAB IDE. 2. Save the file as *. c. and compile it. 3. After successful compilation of the coding close the MPLAB IDE. 4. Fix the Controller IC into PIC Flash kit. 5. Then click on Micro controller Micro Systems PIC Flash Software Icon on the desktop. 6. It displays on dialog box. Then select open and select the program which we already saved as *. c. 7. Then it asks the Confirmation that The IC is empty, select ok. 8. Then it asks Fuses Settings, select YES 9. Then it displays Fuses Settings Dialog Box. 10. In that put WDT — Disabled, WRT– Enabled, Oscillator– XT then click on OK. 11. Then it displays the Program successfully installed into PIC. 12. Then Remove the IC from the PIC Flash and it is ready for used into the project or circuit operation. ———————– Signal conditioning unit Potential transformer Potential transformer AC main Buzzer unit Display Unit User ID Microcontroller unit RFID Reader How to cite Reid Based Prepaid Energy Mater, Essay examples

Plato`s Theory Of Knowledge Essays - Philosophy, Platonism

Plato`s Theory Of Knowledge Plato's Theory of Knowledge is very interesting. He expresses this theory with three approaches: his allegory of The Cave, his metaphor of the Divided Line and his doctrine The Forms. Each theory is interconnected; one could not be without the other. Here we will explore how one relates to the other. In The Cave, Plato describes a vision of shackled prisoners seated in a dark cave facing the wall. Chained also by their necks, the prisoners can only look forward and see only shadows, These shadows are produced by men, with shapes of objects or men, walking in front of a fire behind the prisoners. Plato states that for the prisoners, reality is only the mere shadows thrown onto the wall. Another vision is releasing a prisoner from his chains, how his movements are difficult, his eye adjustment painful and suggestions of the effects of returning to the cave. The Cave suggests to us that Plato saw most of humanity living in "the cave", in the dark, and that the vision of knowledge and the "conversion" to that knowledge was salvation from darkness. He put it this way, "the conversion of the soul is not to put the power of sight in the soul's eye, which already has it, but to insure that, insisted of looking in the wrong direction it is turned the way it ought to be." Plato's two worlds: the dark, the cave, and the bright were his way of rejecting the Sophists, who found "true knowledge" impossible because of constant change. Plato believed there was a " true Idea of Justice". The Cave showed us this quite dramatically. The Divided Line visualizes the levels of knowledge in a more systematic way. Plato states there are four stages of knowledge development: Imagining, Belief, Thinking, and Perfect Intelligence. Imagining is at the lowest level of this developmental ladder. Imagining, here in Plato's world, is not taken at its conventional level but of appearances seen as "true reality". Plato considered shadows, art and poetry, especially rhetoric, deceptive illusions, what you see is not necessarily what you get. With poetry and rhetoric you may be able to read the words but you may not understand the "real" meaning. For example, take, again, the shadow. If you know a shadow is something "real" then you are beyond the state of imagination which implies that a person is "unaware of observation and amounts to illusion and ignorance". Belief is the next stage of developing knowledge. Plato goes with the idea that seeing really is not always believing we have a strong conviction for what we see but not with absolute certainty. This stage is more advanced than imagining because it's based more firmly on reality. But just because we can actually see the object and not just it's shadow doesn't mean we know all there is to know about the object. In the next stage, Thinking, we leave the "visible world" and move into the "intelligible world" which, Plato claims, is seen mostly in scientists. It stands for the power of the mind to take properties from a visible object and applying them. Thinking is the "visible" object but also the hypotheses, "A truth which is taken as self-evident but which depends upon some higher truth". Plato wants us to see all things as they really are so we can see that all is inter-connected. But thinking still doesn't give us all the information we crave and we still ask "why?" For Plato the last stage of developing knowledge, Perfect Intelligence, represents "the mind as it completely releases from sensible objects" and is directly related to his doctrine of Forms. In this stage, hypotheses is no longer present because of its limitations. Plato summarized the Divided Line with "now you may take, a corresponding to the four sections, these four states of mind, intelligence for the highest, thinking for the second, belief for the third and for the last imagining. These you may arrange in terms as the terms in a proportion, assigning to each a degree of clearness and certainty corresponding to the measure in which their object pose a reality". When discussing the Divided Line, The Forms are the highest levels of "reality". Plato concludes here that the "real world" is not what we see but what we understand or feel in a "intelligible world" because it is made up of eternal Forms. The Forms take on the explanation of existence. They are "changeless, eternal, and nonmaterial essences or patterns of which the actual visible objects we