Input is any data or instructions entered into the memory of a computer.

An input device is any hardware component that allows a user to enter data and instructions into a computer.

Input devices can be classified into manual input devices and automated input devices.

Examples of input devices are:

Keyboard

Mouse

Trackball

Touchpad

Joystick

Touch Screen

Light Pen

Stylus and Graphics Tablet

Digital Camera

Scanner

Optical Character Recognition Reader

Optical Mark Recognition Reader

Bar Code Reader

Magnetic Ink Character Recognition Reader

Magnetic Strips Reader

Microphone

Voice Recognition Device

MIDI Device

Digital Video Camera

PC Camera

Web Cam

Sensor and Remote Sensor

Terminal