Any information or data that's entered or sent to the computer to be processed is considered input. Input or user input is most often sent to the computer using an input device such as a keyboard or mouse. In the picture to the right, is and example of input being sent from the computer keyboard to the computer.In general, input can also refer to a contribution of feedback, information, or work. For example, someone may ask you for your input about a project they are doing at work or school.

Types of input devices

Audio conversion device

Barcode reader

Biometrics (e.g. fingerprint scanner)

Business Card Reader

Digital camera and Digital Camcorder

Finger (with touchscreen)

Gamepad, Joystick, Paddle, Steering wheel, and Microsoft Kinect

Graphics tablet

Keyboard

Light gun and light pen scanner

Magnetic ink (like the ink found on checks)

Magnetic-stripe reader

Medical imaging devices (e.g., X-Ray, CAT Scan, and Ultrasound images)

Microphone (using voice speech recognition or biometric verification)

MIDI keyboard

MICR

Mouse, touchpad, or other pointing device

Optical Mark Reader (OMR)

Pen or Stylus

Punch card reader

Remote

Scanner

Sonar imaging devices

Touch screen

Video capture device

VR helmet and gloves

Webcam