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Information Sheet

Input devices are hardware components that allow users to enter data and instructions into a computer system. They are classified into standard input devices like keyboards and mice, and special input devices such as microphones and scanners. Understanding these devices is essential for effective computer usage and interaction.

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12 views2 pages

Information Sheet

Input devices are hardware components that allow users to enter data and instructions into a computer system. They are classified into standard input devices like keyboards and mice, and special input devices such as microphones and scanners. Understanding these devices is essential for effective computer usage and interaction.

Uploaded by

abay.b242
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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INFORMATION SHEET:

INPUT DEVICES
1. What are Input Devices?
Input devices are hardware components used to enter data and instructions into a computer
system. They allow users to interact with the computer by providing information that is
processed by the system.
2. Functions of Input Devices
 Accept data from the external environment.
 Convert data into computer-readable form.
 Transfer data to the Central Processing Unit (CPU) for processing.
3. Classification of Input Devices
Input devices can be classified into two main categories:
A. Standard Input Devices
1. Keyboard
 The most commonly used input device.
 Resembles a typewriter and is used to enter data into the computer.
 Contains alphabetic, numeric, function, and special keys.
 Types:
 General-purpose keyboard (101 keys, used in personal computers).
 Special-purpose keyboard (used in ATMs, POS systems, etc.).
2. Pointing Devices
 Devices used to control the movement of the pointer on the screen.
 Examples:
 Mouse: A small hand-held device used for navigation and selection.
 Functions: Point, Click, Double Click, Drag.
 Types: Mechanical, Optical, Wireless.
 Trackball: Similar to a mouse but with a rolling ball.
 Joystick: Used mainly for gaming and simulations.
 Light Pen: A pen-like device used to draw or interact directly on the
screen.
 Touch Screen: Allows users to interact directly by touching the display.
B. Special Input Devices
1. Microphone
 Captures audio and converts it into digital signals.
 Used in voice recognition systems and communication applications.
2. Scanner
 Converts physical documents into digital formats.
 Types: Flatbed scanner, Handheld scanner, Optical Character Recognition (OCR)
scanner.
3. Camera
 Captures images and videos for input into the computer.
 Used in video conferencing, photography, and security systems.
4. Summary
 Input devices facilitate data entry into a computer system.
 Standard input devices include keyboards, mice, and touchscreens.
 Special input devices include microphones, scanners, and cameras.
 Understanding input devices helps in effective computer usage and interaction.

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