Input related devices which translate an input device's [sensor] analog signals to the corresponding digital signals needed by the computer. Contrast with DAC [digital-to-analog converter]. See: analog, digital.
a chip that takes an analog signal, such as NTSC video, and converts it into a digital signal. Analog-to-digital converters are used on capture cards to change the NTSC video into a format that the computer can better manipulate and store. May also be called "A-to-D converters."
A device that converts analog input signals to digital output signals used to represent the amplitude of the original signal.