Describing input devices.

Tablet graphic.

a graphics tablet is a peripheral that allows users to input graphics or drawings by hand, just as you would with pen and paper.

Game controller.

A game controller is a device used with games or entertainment systems to provide input to a video game, typically to control an object or character in the game.

Scanner.

A scanner is a peripheral computer that is used to convert, by using the light, printed images or documents to digital format.

Mouse.

The mouse is a pointing device used to facilitate the management of a graphical environment on a computer.

keyboard.

a keyboard is an input device, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches that send information to the computer.

Ligh pen.

The stylus input device is a computer, taking the form of a photosensitive wand that can be used to point in a similar fashion to a touch screen but with higher positional accuracy.

Trackball.

A trackball pointing device is comprised of a stationary ball embedded in a receptacle that contains sensors that detect the rotation of the ball along two axes.

microphone.

The microphone is an electroacoustic translator. Its function is to translate the vibrations due to acoustic pressure exerted on the capsule by sound waves into electric energy.