Which of the following statements differentiates an ADC from a DAC and identifies a typical use in instrumentation labs?

• A. An ADC converts analog sensor signals to digital data for processing; a DAC converts digital control signals back to analog form to drive actuators or test equipment.
• B. An ADC converts digital signals to analog; a DAC converts analog to digital; This is incorrect.
• C. An ADC handles only time-domain signals; a DAC handles frequency-domain signals.
• D. An ADC is used to amplify signals; a DAC is used to filter signals.

Answer: (A)