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COMPUTER HARDWARE

The term ‘hardware’ refers to the parts of a computer that we can see and touch.

In other words, hardware are the tangible parts of a computer system.
The Hardware devices are classified into four categories:

HARDWARE

Input Devices Processing Device Output Devices Storage Devices

INPUT DEVICES

The hardware devices that are used to give inputs in the form of words, pictures,

sounds, etc., to a computer are called input devices. Some of the most commonly
used input devices are:

Keyboard: A keyboard is an input device used to
give input to the computer by typing numbers,

letters and special characters.
Keyboard

The invention of Qwerty keyboard

Mouse: A mouse is an input device. We can send instructions to the
computer by clicking on its buttons. It is also used to select objects and

draw pictures on the screen.

Mouse

Joystick: A joystick is an input device used for playing games.

Joystick
Webcam: A webcam is an input device used to capture pictures or

videos in digital form.
Webcam

Light pen: A light pen is an input device used to point or draw on
the screen. Light Pen

26 Computer Science (V5.0)-II