This document provides an overview of computers. It defines a computer as an electronic device that performs calculations and processes information. Computers have two main parts: hardware and software. The hardware are the physical and tangible parts like the central processing unit, monitor, keyboard, and mouse. The software are programs like Microsoft Word, PowerPoint, and Excel that tell the computer what to do. Computer input devices such as keyboards, mice and scanners are used to input information into the computer. Output devices like monitors and printers are used to output information from the computer.

1. Presentation of ComputerPresentation of Computer

2. Table of ContentsTable of Contents
 What is aWhat is a ComputerComputer
 Computer HardwareComputer Hardware
 Examples of Computer HardwareExamples of Computer Hardware
 Computer SoftwareComputer Software
 Computer Input DevicesComputer Input Devices
 Computer Output DevicesComputer Output Devices

3. Definition of ComputerDefinition of Computer
 A device that computes,A device that computes,
especially a programmableespecially a programmable
electronic machine thatelectronic machine that
performs high-speedperforms high-speed
mathematical or logicalmathematical or logical
operations or thatoperations or that
assembles, stores,assembles, stores,
correlates, or otherwisecorrelates, or otherwise
processes information.processes information.
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4. Computers Have Two Main PartsComputers Have Two Main Parts
1.1. Computer HardwareComputer Hardware
2.2. Computer SoftwareComputer Software

5. What is Computer Hardware?What is Computer Hardware?
 Computer Hardware is theComputer Hardware is the
physical part of the computerphysical part of the computer
system, the machinery andsystem, the machinery and
equipment.equipment.
 Parts of the computer “you canParts of the computer “you can
see”see”
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6. Examples of Computer HardwareExamples of Computer Hardware
Monitor: T.V. like screen used to show pictures and
words
CPU: Central Processing Unit this is where most of
the computer’s calculations take place. In terms of
computing power, the CPU is the most important
element of a computing system.
Keyboard: This device is used to type
information into the computer and contains the
numbers 0-9.
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7. More Computer HardwareMore Computer Hardware
Mouse: a small device, which you move across the top of
the desk to move the pointer or cursor on the screen.
Printer: used to make a paper copy of the information
into the computer.
Image Scanner: an electronic device that generates a
digital representation of an image for data input to a
computer
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8. What is Computer Software?What is Computer Software?
 Computer Software are programs that tell theComputer Software are programs that tell the
computer what to do.computer what to do.
ExamplesExamples
 Microsoft Word-word processing programMicrosoft Word-word processing program
 Microsoft PowerPoint-presentation programMicrosoft PowerPoint-presentation program
 Microsoft Excel-work book program used toMicrosoft Excel-work book program used to
track, calculate, and analyze numeric datatrack, calculate, and analyze numeric data
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9. Computer Input DevicesComputer Input Devices
 Computer Devices that input information in theComputer Devices that input information in the
computercomputer
ExamplesExamples
 Key BoardKey Board
 MouseMouse
 ScannerScanner
 Digital CameraDigital Camera
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10. Computer Output DevicesComputer Output Devices
 Computer Devices that output informationComputer Devices that output information
from the computer.from the computer.
ExamplesExamples
 MonitorMonitor
 PrinterPrinter
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11.  PREPARED BY : KHUSHI YADUVANSHIPREPARED BY : KHUSHI YADUVANSHI
 CALSS : 6-CCALSS : 6-C
 ROOL NO. : 15ROOL NO. : 15