Download - Mrs. Saima Tahir Miss.Ammara Irshad
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Mrs. Saima TahirMiss.Ammara Irshad
Topic: Computer Input Devices
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Contents
Definition of Input Devices Types of Input Devices Key Board Mouse Scanner Micro Phone Light Pen
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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.
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Definition
An input device is any peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system.
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Input Devices
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Key Board
The set of typewriter-like Keys that enables you to enter data into a computer.
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Mouse
Device that controls the movement of the cursor or pointer on a display screen.
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Scanner
A scanner is a device that captures images from photographic prints, posters, magazine pages, and similar sources for computer editing and display.
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Micro Phone
An instrument that converts sound waves into an electric current, usually fed into an amplifier, a recorder, or a broadcast transmitter.
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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.
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