Q. Which one of the following groups has only input devices?

Correct Answer: d) Mouse, Keyboard, Scanner

Explanation:

Input devices are hardware components that allow users to provide data and control signals to a computer. Let us analyze the options:

1. Mouse: An input device used to control the pointer on the screen.

2. Keyboard: An input device used to type text and provide commands to the computer.

3. Scanner: An input device used to convert physical documents or images into digital format.

Now, let us examine the other options:

– Option a) Mouse, Keyboard, Printer: A printer is an output device, as it is used to produce physical copies of digital documents.

– Option b) Mouse, Keyboard, Projector: A projector is an output device, as it displays digital content on a larger screen or surface.

– Option c) Mouse, Keyboard, Monitor: A monitor is an output device, as it displays visual output from the computer.