10 Digital Interfaces
10.1 INTRODUCTION
Digital interfaces enable the conversion of analog signals to a digital format that can be an input to a computer or a digital data storage system and, conversely, take digital data from a computer or digital storage system and convert it to an analog signal (voltage or current, thence to sound, light intensity, etc.). An analog-to-digital converter (ADC) performs the former task, whereas a digital-to-analog converter (DAC) does the latter operation. As will be seen, there are many types of ADCs and DACs.
The majority of ADC and DAC operations involve sampling, i.e., the periodic conversion of signals to ...
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