Which of the following cannot be used as an input device on a computer system?

Correct option is C

The correct answer is (c) Plotter
Explanation:
● A Plotter is an output device that interprets commands from a computer to make line drawings on paper with one or more automated pens.
● Unlike a regular printer, it can draw continuous point-to-point lines directly from vector graphics files.
● Joystick, Touch Pad, and Keyboard are all used to send data/signals to the computer, making them input devices.
Information Booster:
● Plotters are used in applications like CAE (Computer-Aided Engineering) and CAD (Computer-Aided Design).
● There are three types of plotters: Drum plotter, Flatbed plotter, and Inkjet plotter.
Additional Knowledge:
● Joystick: Primarily used for gaming or controlling industrial machinery.
● Touch Pad: Common on laptops as a substitute for a mouse.