Which one of the following devices is an input device?

Correct option is B

A microphone is an input device that allows users to input audio into a computer system. It converts sound waves into electrical signals that can be processed by the computer.
Important Key Points:
1. Microphone - It takes in audio signals, allowing users to record voice, provide voice commands, or engage in video calls.
Knowledge Booster:
· Monitor: A monitor is an output device used to display information such as graphics and text.
· Speaker: Speakers are also output devices that convert digital audio signals into sound.
· Printer: A printer is an output device used for creating physical copies of digital documents.