Sampling Law by Dataforth

Information that varies continuously as a function of time is analog information. Computers are digital devices and, therefore, must convert analog information to a digital format in order to work with the information. The analog- to-digital conversion concept is fundamentally straightforward: Analog-to-digital circuitry interrogates (samples) analog signals at some periodic rate, converts each sample to a digital number, and then presents the individual samples to the computer as a representation of the time varying analog signal.

Sampling Law (3 page pdf)

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