clasification of computers

8/6/2019 Clasification of Computers

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COMPUTER SYSTEMSCOMPUTER SYSTEMS

± ± The most powerful computers, used byThe most powerful computers, used bylarge organizations and department withinlarge organizations and department within

organizations are microcomputers,organizations are microcomputers,

midrange computers, mainframes and themidrange computers, mainframes and the

super computers.super computers.



CATEGORIES OF COMPUTER SYSTEMCATEGORIES OF COMPUTER SYSTEM

MICRO COMPUTER MICRO COMPUTER

MIDRANGE COMPUTER SYSTEMMIDRANGE COMPUTER SYSTEM

MAINFRAME COMPUTERSMAINFRAME COMPUTERS

SUPER COMPUTERSSUPER COMPUTERS



Types of Micro computersTypes of Micro computers

1.1. Personal Computer : PCs are easier to use andPersonal Computer : PCs are easier to use and

affordable than work stations. PCs are developedaffordable than work stations. PCs are developed

generally as desktop or portable machines.generally as desktop or portable machines.

2.2. Work stationsWork stations--Technical work stations thatTechnical work stations thatsupport applications with heavy mathematicalsupport applications with heavy mathematical

computing and graphics display demand such ascomputing and graphics display demand such as

computer aided design in engineering or computer aided design in engineering or

investment portfolio analysis in the securitiesinvestment portfolio analysis in the securitiesindustry.industry. Super micros are the powerful work Super micros are the powerful work

stations e.g.stations e.g.-- Sun , Apple , HP, NeXTSun , Apple , HP, NeXT..



Mid Range Computer SystemMid Range Computer System

These computer were first known as minicomputers for These computer were first known as minicomputers for

scientific research , instrumentation systems, engineeringscientific research , instrumentation systems, engineering

analysis, and industrial process monitoring and control.analysis, and industrial process monitoring and control.

The more powerful minicomputers are called Superminis.The more powerful minicomputers are called Superminis.

They are not so powerful as mainframes, but less costly toThey are not so powerful as mainframes, but less costly to

buy, operate and maintain and thus meet the computing buy, operate and maintain and thus meet the computing

needs of organizations.CPU Speed is 100Kips to 500 Mipsneeds of organizations.CPU Speed is 100Kips to 500 Mips

. Ex. Honeywell , Datapoint.etc. Ex. Honeywell , Datapoint.etc



Characteristic of MinicomputersCharacteristic of Minicomputers

Smaller CPU than a mainframe.Smaller CPU than a mainframe.

Word length are usually 16Word length are usually 16--32 bits.32 bits.

Supports between 15 to 25 Terminals.Supports between 15 to 25 Terminals.



Mainframe computersMainframe computers

These are large computers built to a conventionalThese are large computers built to a conventional

architecture. These can process several millionarchitecture. These can process several million

instruction per record. Large organizations useinstruction per record. Large organizations usethese machines to handle wide array of data suchthese machines to handle wide array of data such

as banks, insurance companies ,airlines, railwayas banks, insurance companies ,airlines, railway

reservation, space research organization .reservation, space research organization .

Mainframe term was originally referred to theMainframe term was originally referred to thecabinet in a large computer cabinet in a large computer system.Exsystem.Ex. IBM 4300. IBM 4300

Series , Honeywell 60 series.Series , Honeywell 60 series.



Super Computer Super Computer

The speed and power of super computers, the fastestThe speed and power of super computers, the fastest

class of computers, are almost beyond humanclass of computers, are almost beyond human

comprehension, and their capabilities arecomprehension, and their capabilities are

continuously being improved. The term super continuously being improved. The term super

computer describes a category of extremelycomputer describes a category of extremely

powerful computer systems specially designed for powerful computer systems specially designed for

scientific, engineering and business applicationsscientific, engineering and business applications

requiring high speeds for massive numericrequiring high speeds for massive numeric

computations.computations. Ex.param8000,param10000 etc .Ex.param8000,param10000 etc . It¶sIt¶s

cost is from 5 million to 50 million dollar.cost is from 5 million to 50 million dollar.



Thank YouThank You

clasification of computers

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