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The main web page for all information is: (circle one) www.cs.wmich.edu/-bharrtm www.cs.wmich.edu/~bharriin/cs1200 What experience, if any, do you have writing computer programs? Which email server will be used for all email communications between me and you? What does you email have to do to get past my spam filters? Besides the normal weighed scale for how much exams and projects count, what is the important new rule to get a passing grade? Compare and contrast the terms digital and analog. Give an example of an electronic digital device. Give an example of an electronic analog device. What is the difference between a computer and the digital device that runs a car engine (ECU)?Explanation / Answer
I am here answers only 5th question because none other i don't understand or i need more info about that..
5. Analog and digital signals are used to transmit information, usually through electric signals. In both these technologies, the information, such as any audio or video, is transformed into electric signals. The difference between analog and digital technologies is that in analog technology, information is translated into electric pulses of varying amplitude. In digital technology, translation of information is into binary format (zero or one) where each bit is representative of two distinct amplitudes.
Analog Digital Signal Analog signal is a continuous signal which represents physical measurements. Digital signals are discrete time signals generated by digital modulation. Waves Denoted by sine waves Denoted by square waves Representation Uses continuous range of values to represent information Uses discrete or discontinuous values to represent information Example Human voice in air, analog electronic devices. Computers, CDs, DVDs, and other digital electronic devices. Technology Analog technology records waveforms as they are. Samples analog waveforms into a limited set of numbers and records them. Data transmissions Subjected to deterioration by noise during transmission and write/read cycle. Can be noise-immune without deterioration during transmission and write/read cycle. Response to Noise More likely to get affected reducing accuracy Less affected since noise response are analog in nature Flexibility Analog hardware is not flexible. Digital hardware is flexible in implementation. Uses Can be used in analog devices only. Best suited for audio and video transmission. Best suited for Computing and digital electronics. Applications Thermometer PCs, PDAs Bandwidth Analog signal processing can be done in real time and consumes less bandwidth. There is no guarantee that digital signal processing can be done in real time and consumes more bandwidth to carry out the same information. Memory Stored in the form of wave signal Stored in the form of binary bit Power Analog instrument draws large power Digital instrument drawS only negligible power Cost Low cost and portable Cost is high and not easily portable Impedance Low High order of 100 megaohm Errors Analog instruments usually have a scale which is cramped at lower end and give considerable observational errors. Digital instruments are free from observational errors like parallax and approximation errors.Related Questions
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