Analog to Digital Conversion

• The process by which an analog signal is digitized is called analog-to-digital or ``a-to-d'' conversion

• analog-to-digital converter (ADC): the device that discretizes (digitizes) an analog signal.

• The ADC must accomplish two (2) tasks:
  1. sampling:
     • taking values (samples) at regular time intervals;
  2. quantization:
     • assign a number to the value (using limited computer bits).