A Digital- To- Analog Converter (DAC)

A digital- to- analog converter (DAC) :

A) converts the analog input from a transducer or some other device to a representative digital input for a computer or some other digital device.
B) converts the digital output of a computer to a corresponding analog representation, usually voltage or current.
C) monitors the digital representation of an analog value during the computer's program execution.
D) converters a digital value to a representative physical analog value such as pressure or temperature.