1---- Discuss the different digital to analog converter (DAC) types and configur
ID: 2989853 • Letter: 1
Question
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Discuss the different digital to analog converter (DAC) types and configurations. What is the purpose of the DAC? How do you interface to the different configurations?
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Share your ideas and thoughts on how the digital to analog converter might be used by graduates of your degree program (BMET, CET, EET, REET).
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When processing large sets of data, the running time of the algorithm or program in use is very important. We will explore the meaning of running time of an algorithm and a mathematical tool that expresses a measure of the efficiency of algorithms: the big O notation. We will also discuss the various types of sorting algorithms, their running times, and applications.
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We will discuss the mechanism of recursion, uses, advantages, and disadvantages. We will also explore the relationship between the algorithmic technique of divide and conquer and recursion.
Explanation / Answer
In electronics, a digital-to-analog converter (DAC, D/A, D2A or D-to-A) is a function that converts digital data (usually binary) into ananalog signal (current, voltage, or electric charge). An analog-to-digital converter (ADC) performs the reverse function. Unlike analog signals,digital data can be transmitted, manipulated, and stored without degradation, albeit with more complex equipment. But a DAC is needed to convert the digital signal to analog to drive an earphone or loudspeaker amplifier in order to produce sound (analog air pressure waves).
DACs and their inverse, ADCs, are part of an enabling technology that has contributed greatly to the digital revolution. To illustrate, consider a typical long-distance telephone call. The caller's voice is converted into an analog electrical signal by a microphone, then the analog signal is converted to a digital stream by an ADC. The digital stream is then divided into packets where it may be mixed with other digital data, not necessarily audio. The digital packets are then sent to the destination, but each packet may take a completely different route and may not even arrive at the destination in the correct time order. The digital voice data is then extracted from the packets and assembled into a digital data stream. A DAC converts this into an analog electrical signal, which drives an audio amplifier, which in turn drives a loudspeaker, which finally produces sound.
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