Which of the following devices is an example of an analogue input device?

A microphone is an example of an analogue input device because it captures audio signals, which are continuous in nature. When a person speaks or makes any sound, the microphone converts these sound waves into electrical signals that can vary in amplitude and frequency, thus representing a range of values. This continuous signal is characteristic of analogue technology, which contrasts with digital technology that represents information in discrete values.

In comparison, a mouse and a keyboard are digital input devices as they translate physical movements and key presses into binary signals, which represent discrete events rather than continuous data. A printer, on the other hand, is an output device, converting digital data back into analogue form (through ink on paper), but it does not function as an input device.