DAC (Digital to Analog Converter) finds application in
(a) digitally controlled gains
(b) motor speed controls
(c) programmable gain amplifiers
(d) all of the mentioned
This question was addressed to me in semester exam.
This intriguing question originated from Interfacing Digital to Analog Converters, Stepper Motor Interfacing and Control of High Power Devices Using 8255 topic in division Basic Peripherals and their Interfacing with 8086/88 of Microprocessor