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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
Microphone: A microphone is an input device used to record voice,
music and other sounds on a computer.
Microphone
Light pen: A light pen is an input device used
to point or draw on the screen.
Light Pen
Scanner: A scanner is an input device that reads text or images
and sends their copies to the computer.
Scanner
10 Trackpad (V2.1)-III

