Analog to Digital Converters

An analog to digital converter(ADC,A/D or A2D) converts an analog signal to digital signal,and a digital to analog converter(DAC,D/A or D2A) does the opposite.Such type of conversions are necessary because while embedded systems deal with digital values,an embedded system's surroundings typically involves many analog signals.Analog refers to a continuous valued signal such as temperature or speed,with infinite possible values in between.Digital refers to discretely valued signals,such as integers and in computing systems,these signals are encoded into binary.By converting between analog and digital signals,we can use digital processors in an analog environment.