For what purpose, the joystick is used?

A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling. While they are used in various applications like controlling cranes, trucks, and underwater unmanned vehicles, their most common use in a computing context is for computer gaming (especially flight simulators) and controlling industrial robots.

• Option A: Scanning is done by a Scanner.

• Option C: Entering text is primarily done with a Keyboard.

• Option D: Sound is usually controlled via software sliders or dedicated volume keys/knobs.