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Computer Hardware
The parts of a computer that we can see and touch are called Hardware. All input,
processing, output and storage devices form the hardware components of a computer
system. The hardware components are divided into four groups.
Prime (Ver. 2.2)-III Devices Processing Devices Storage
Hardware
Output
Input
Devices
Devices
Input Devices
14 The devices that help us to enter data into the computer and give orders to the
computer are called input devices. Some of the input devices are keyboard, mouse,
scanner, joystick, touchscreen, microphone, web camera, light pen, etc.
Keyboard
A keyboard is used to give input to the computer by
typing numbers, letters and special characters.
Mouse
A mouse is used to send instructions to the computer with the
click of a button. It is also used to draw pictures and select
objects in the computer. It is also called a pointing device.
Scanner
A scanner is used to read papers, documents, images or pictures
and send them as input into the computer.
Joystick
A joystick is used to play games on a computer. It helps to control
the different movements in the game.

