This website uses cookies to ensure you have the best experience. Learn more

A/D And D/A Convertors And Display Devices

3141 words - 13 pages

Contents PageTask 3A/D and D/A Convertors 4Analogue and Digital Signals 4Analogue / Digital Conversions 5Analogue to Digital Convertors 6Digital To Analogue Converter 8Glossary Of Terms 10Visual Display Devices 11Seven-Segment Displays 14Dot Matrix Displays 16Bibliology 18TaskA/D and D/A ConvertorsExplain two methods of converting analog signals to digital signals and compare them. Explain one method of digital to analog conversion. Choose two A/D convertor devices from the catalogue and list their characteristics, performance, cost, applications etc.Display DevicesDescribe how LED and LCD display devices operate - ie explain the principle behind their operation. Describe the features of the 7-segment, star-burst and dot matrix displays. Choose some devices from the catalogues and describe them.You are required to produce a written report on your work. The report should be in standard report format and comprise of a front page with title, contents page summary, introduction, main body of the report describing the task and how you met the requirements of the task, circuit diagrams etc. and conclusions. Appendices may be placed in the report if necessary.The report should be word processed and presented in a plastic folder. Your name class and subject should be clearly visible.A/D and D/A ConvertorsAnalogue and Digital SignalsAnalogue Signals - Signals whose amplitude and/or frequency vary continuously eg. sound. Fig 1.1 illustrates an analogue signal:-Fig 1.1 Illustration of an analogue signalDigital Signals - Signals which are not continous in nature but consist of discrete pulses of voltage or current known as bits which represent the information to be processed. Digital voltages can vary only in discrete steps. Normally only two levels are used ( 0 and 1 ).Fig 1.2 illustrates a digital signal.Fig 1.2 Illustration of a digital signalAnalogue / Digital ConversionsIn todays electronic system it is often necessary that the overall system may not be entirely analogue or entirely digital in nature. Thus a digital system may be controlled by input signals which are the amplified analogue outputs, perhaps of some measuring transducer (termister, LDR). Similarly a digital system output may be required to control the measured analogue system via analogue control values.Interfacing is therefore required between the analogue and digital subsystems and it is necessary to be able to convert an analogue signal into a digital equivalent signal and visa versa. A/D and D/A convertors are therefore used.An analogue signal cannot be represented exactly by a digital signal and must be sampled at sufficient intervals for all relevant information to be retained. Sampling theory states that at least two samples must be obtained per period of the highest frequency component. If the highest frequency component is fs then the period of the sampling signal is given by:-TFig. 2 Sample and HoldFig.2 shows a basic sample and hold circuit. The capacitor C is used as a store...

Find Another Essay On A/D and D/A Convertors and Display Devices

President Franklin D. Roosevelt a liberal and President Herbert C. Hoover as a conservative

988 words - 4 pages boards" [Doc E].This is not first time in history, where the ideals of one party combines with an opposite party. The first two parties of America, the Federalists and Democratic-Republicans, is a prime example of this. The Democratic-Republican Party was victorious over the Federalists. However in their administration, they often used Federalist ideas in their reforms. To say that President Franklin D. Roosevelt is a liberal and that President

D-day equipment and strategy Essay

933 words - 4 pages go home once that’s all done. With a lot of soldiers comes a lot of weapons and equipment to use. There were about 47 guns used in D-day from heavy machine guns to flamethrowers. There was also about 24 aircraft from heavy bombers to gliders. There were also 29 tanks from heavy tanks to light tanks. There were 28 vehicles from armored fighting vehicles to tractors. They also had 8 warships that dropped of troops on the beach. They had about

D-day equipment and strategy

1143 words - 5 pages gonna move on and take back the countries under Hitler’s control. After that we will capture Hitler and take him prisoner. Then we can go home once that’s all done. With a lot of soldiers comes a lot of weapons and equipment to use. About 47 guns used in D-day from heavy machine guns to flamethrowers. A total of about 24 aircraft from heavy bombers to gliders. There were also 29 tanks from heavy tanks to light tanks. There were 28 vehicles

D-Day and its Victory

1092 words - 5 pages and would soon to be known as D-day, one of the biggest victories against Nazi Germany occupation in World War II. Many important events and battles occurred in order for D –day to be as successful as it was however, if D-day hadn’t happened or failed, the end of World War 2 would’ve been further delayed date and a completely different outcome of the war however, what were the key things that made allied victory on D-Day possible? In my opinion

D and F Fresh Milk

4796 words - 19 pages ;………………………………………………………………………18HOW DOES D & F FRESH MILK LTD DIFFER FROM OTHER NON-CORPORATEBUSINESS OWNERSHIP?D and F fresh milk is a private limited company therefore it belongs to the incorporated business ownership and this corporation differ from the non

D-Day And Normandy Invasion

1161 words - 5 pages By the 1944, the Germans were taking over cities like they are taking candy from baby. Any offensive that came against them they destroyed. Germany was building its country in size and it could make allies lose. So, The Allies needed to stop Germans fast. They decided the only way to successfully conquer the Germans was to make a mass invasion across the English Channel.Bernard Law Montgomery was appointed the Allied invasion commander. He

John D. Rockefeller a Business Man in the Oil Industry and an Industrialist

932 words - 4 pages . Rockefeller. Rockefeller dominated oil industry, which was a budding industry in the 1860s. He founded Standard Oil, which quickly monopolized the entire petroleum industry. Although vilified by many during his time, Rockefeller, along with other “Captains of Industry”, revolutionized the United States, from business to even philanthropy. Rockefeller was born in New York in 1839. In 1853, he and his family moved to Cleveland where he would attend

Process and Analysis Essay: How to throw a pot in 3-D Design Art class

577 words - 2 pages Throwing a Pot Ceramics is an ancient art that has evolved through out the ages. There many techniques used to acquire the desired overall look. One of the most common of these is the use of a throwing wheel. This essay will supply you with all of the information needed to throw your first pot. First you will need good clay. The easiest clay to start with is called Navajo White. This clay is much smoother and easier to center on

A reserch essay on Dwight D. Eisenhower and whether or not he made a positive contribution to world war 2

549 words - 2 pages , before the battle for the beaches of Normandy (D-Day) Eisenhower wrote every man who was to participate in the battle a letter which urged them to succeed in the battle. The letter told the men that they were about to embark on a great crusade that will not be an easy one and that the hopes and prayers of liberty-loving people march with them. He also stated that he had full confidence in their courage, devotion to duty and skill in battle. He hoped

John D. Rockefeller as a Robber Baron

4759 words - 19 pages John D. Rockefeller as a Robber Baron A "robber baron" was someone who employed any means necessary to enrich themselves at the expense of their competitors. Did John D. Rockefeller fall into that category or was he one of the "captains of industry", whose shrewd and innovative leadership brought order out of industrial chaos and generated great fortunes that enriched the public welfare through the workings of various philanthropic agencies

Application Essay for a Ph. D Program

944 words - 4 pages Striving for perfection is a natural force, which has led mankind to its present state of advancement. Perfection, for me, means enhancing my knowledge in specific field of interest which will enable me to contribute to the advancement of society in general and to deeper understanding of my field in particular. It is with these objectives in mind that I wish to pursue the Ph.D. program in Operations and Supply Chain Management (OSM) at Texas A&M

Similar Essays

A Comparison Of Malory's Morte D' Arthur And Camelot

553 words - 2 pages An Epic Hero for Modern TimesIn about 1470, Thomas Malory finished Morte d' Arthur, thefirst of the many legends written about King Arthur. Even in moderntimes, King Arthur and the Knights of the Round Table are a favoritesubject in movies, books, and plays. Often times this is so because theMedieval Period in general, and King Arthur in particular, have an airof mystery, romance, fantasy, and adventure that are popular themes inall times and

A I D S Essay

1476 words - 6 pages a high rate of infection are Uganda, Burundi, Malawi, Rwanda, Tanzania and Zambia. According to World Health Organization, Asia had 1 millian individuals mostly in India and Thailand whose blood had tested positive for the AIDS vius (steel 11). In order to increase awareness about AIDS, including how dangerous it is, we must make sure that every person knows what AIDS is, how it is spreading in Asian and AFrican countries and how it is transmit

L And D Methamphetamine Essay

1468 words - 6 pages . Methamphetamine is a colorless form of the drug D-methamphetamine. The clear odorless substance is abused because of its long-lasting excited effects on the user. Crystal meth is more pure than the powdered form of methamphetamine and has a longer lasting effect, as well as a powerful physiological effect. By injecting or smoking D-methamphetamine the person gets a rush that can last 30 minute. This drug is highly addictive because smoking or injecting the

Aaa B C D A Essay

533 words - 2 pages Task Criteria Assessment Area High achievement Good achievement Satisfactory achievement Low achievement Knowledge and Understanding Understand the Flash interface and how to design and create an interactive labelling style learning object A+ to A- B+ to B- C+ to C- D- to E- ( Planning and concept development demonstrated an understanding of technical knowledge and predicted outcomes for the learning object