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analog-to-digital converter

The hardware that turns a continuous-time voltage into a sequence of numbers (ADC), or a sequence of numbers back into a voltage (DAC).

An analog-to-digital converter (ADC) samples and quantizes a continuous-time signal into a sequence of numbers a computer can store and process; a digital-to-analog converter (DAC) reverses this, turning a sequence back into a continuous-time voltage a speaker or actuator can use.

See also

continuous-time signal discrete-time signal
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