NURIZAH RAMLI

10D0124

DTE

Any data or instruction entered into the computer is known as INPUT.

An input device helps you to communicate with the computer.

To enter information and issue commands, you use input devices.

Examples of input devices:KeyboardMouseScannerMicrophoneDigital Camera and Web Camera

The keyboard is the most common and widely used input device.

It is made up of buttons called 'keys'. The keys are arranged into sections:

• Alphabet keys • Function or F keys (F1, F2, F3) • Numeric keys (one set above the alphabet keys

and a numeric keypad on the right) • Arrow keys • Command keys (insert, delete, home, end, page

up/down)

A mouse is an input devices that fits comfortably under the palm of your hand.

A mouse is a pointing device.We use mouse to control the movement of the

mouse pointer on the screen and to make selections from the screen.

The bottom of a mouse is flat and contains a mechanism that detects the movement of a mouse.

optical mouse Mouse in which the ball is replaced by an optical system

(light-emitting diode and sensor); it has no movable parts.

wheel mouse Mechanical or optical mouse that contains a scroll

wheel.

cordless mouse Mechanical or optical mouse connected to the computer

by infrared or radio signals.

A scanner is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can use.

The image or text can be saved or changed on the computer.

bar code reader Device that uses an optical scanning process to

decode information contained in bar codes.

optical scanner Equipment that converts a document’s

graphics or texts into digital data.

Optical scanner Bar code reader

microphone Device that converts electric pulses into

broadcast or recorded sounds.

A microphone allows you to record your voice to the computer.

It also lets you speak to other people using computers or even on the telephone.

A microphone is also called a mic.

Web camera Miniature digital camera used to transmit video

images in real time or for videoconferencing over the Internet.

digital camcorder Portable video camera in which the recording tape is

replaced by a processor, which records and stores sounds and images in digital format.

digital camera Camera that contains a sensor and a microprocessor

rather than film; it records and stores images in digital form, which can then be viewed on a screen.