mrs. saima tahir miss.ammara irshad

Mrs. Saima TahirMiss.Ammara Irshad

Topic: Computer Input Devices

Contents

Definition of Input Devices Types of Input Devices Key Board Mouse Scanner Micro Phone Light Pen

Objectives

Students will be able to Define Input devices Recognize different types of input devices

e.g. key board, mouse, scanner, microphone and light pen.

Definition

An input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system.

Input Devices

Key Board

The set of typewriter-like Keys that enables you to enter data into a computer.

Mouse

Device that controls the movement of the cursor or pointer on a display screen.

Scanner

A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display.

Micro Phone

An instrument that converts sound waves into an electric current, usually fed into an amplifier, a recorder, or a broadcast transmitter.

Light Pen

A small, photosensitive device connected to a computer and moved by hand over an output display in order to manipulate information in the computer.