Presentation on computer

Description on basic computer, Input and output devices.

1. PRESENTATION ON COMPUTER

2. CONTENT
1.Introduction
2.ClassificationofComputer
3.Hardware
4.Software
5.InputDevices
6.OutputDevices
7.UsageofComputer

3. INTRODUCTION
Thetermcomputerisderivedfromtheword
compute.Acomputerisanelectronicdevicethat
takesdataandinstructionasaninputfromthe
user,processesdata,andprovideuseful
informationknownasoutput.Thiscycleof
operationofacomputerisknownastheinput-
process-outputcycleandasinshowninfigure.

4. CLASSIFICATIONOFCOMPUTER
Computer is classified into several
categories depending on their computing
ability and processing speed. These include
Microcomputer
Minicomputer
Mainframe Computer
Supercomputer

5. MICROCOMPUTER
The term microcomputer is generally synonymous with
personal computer, or a computer that depends on a
microprocessor. Microcomputers are designed to be used by
individuals, whether in the form of PCs, workstations or
notebook computers. A microcomputer contains a CPUon a
microchip, a memory system (typically ROMand RAM), a bus
system and I/O ports, typically housed in a motherboard.

6. MINICOMPUTER
Aminicomputerisamedium-sizedcomputerthatismorepowerfulthanthe
microcomputer.Animportantdistinctionbetweenthemicrocomputeranda
minicomputeristhataminicomputerisusuallydesigntoservemultiple
userssimultaneously.Asystemthatsupportmultipleusersiscalleda
multiterminal,time-sharingsystem.Minicomputerarethepopular
computingsystemsamongresearchandbusinessorganizationstoday.
Theyaremoveexpensivethanmicrocomputer.

7. MAINFRAME COMPUTER
Mainframecomputerarethosecomputer,whichhelpin
handlingtheinformationprocessingofvariousorganization
likebanks,insurancecompanies,hospitalsandrailways.
Mainframecomputerplacedonacentrallocationandare
connectedtoseveraluserterminals,whichcanactasaccess
stationsandmaybelocatedinasamebuilding.Mainframe
computerislargerandexpensiveincomparisontoother
workstations.

8. SUPER COMPUTER
Supercomputerarethemostpowerfulandexpensive
computersavailable.Supercomputersareprimarilyusedfor
complexscientificapplication,whichneedahigherlevelof
processing.Someoftheseapplicationincludeweather
forecasting,climateresearch,molecularmodelingusedfor
chemicalcompounds,aeroplanesimulationandnuclearfusion
research.

9. HARDWARE
The electronic device is known as hardware.
Computer Hardware is the physical part of the computer
system, the machinery and equipment.
Parts of the computer “you can feel”
Internal hardware devices include motherboards, hard
drives, and RAM. External hardware devices include
monitors, keyboards, mice, printers, and scanners.
The internal hardware parts of a computer are often
referred to as components, while external hardware
devices are usually called peripherals. Together, they all fall
under the category of computer hardware.

10. SOFTWARE
Softwareisacollectionofcomputerprogramsand
relateddatathatprovidetheinstructionsfortelling
acomputerwhattodoandhowtodoit.Inother
words,softwareisaconceptualentitywhichisa
setofcomputerprograms,procedures,and
associateddocumentationconcernedwiththe
operationofadataprocessingsystem.Wecan
alsosaysoftwarereferstooneormorecomputer
programsanddataheldinthestorageofthe
computerforsomepurposes

11. INPUT DEVICES
Input device captures information and translates it into a form
that can be processed and used by other parts of your computer.

12. OUTPUT DEVICES
Output devices take information within your computer and
present it to you in a form that you can understand.

13. USAGE OF COMPUTER
Computeristhebestcompanionofour
dailylife
•Networkattachedstorage
•MediaServer
•Graphicsdesign
•On-linebanking
•Gaming
•SocialNetworking
•Knowledgesharing
•Science