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Classification of computer on the
basic of size
Hello!I am Nirajan silwalI am here because I love to give presentations.
SUPER COMPUTER
1
“◇ Super computer is the most powerful
and fastest computer among digital computer.
◇ This computer is special purpose and is capable of handling huge amount of calculations that are beyond human capabilities.
◇ It can perform at billions of instructions per second(BIPS).
◇ Super computer has the computing capability equal to that 40,ooo microcomputer.
“◇ This computer is most expensive
computer(cost about 15-20 million dollar range).
◇ It is used only by large organization like:NASA,UNIVERSITIES & GOVERMENT AGENCIES, mainly in the area of defence and weaponry, weather forecasting , satellite communication, nuclear research etc.
◇ It requires large space and temperature controlled room.
◇ Examples:NEC-500,CRAY X-MP/24 etc.
MAINFRAME
2
“◇ Mainframe is large, powerful system.◇ Although this system offers high
processing power , they lack in flexibility.
◇ It is designed for large-scale data processing.
◇ It is very large in size with area of 1000sq.ft.
◇ It supports large number of terminals, more than 100 terminals.
◇ It is suitable for big organization such as bank ,insurance companies, airlines , railway system.
“Example: IBM 1401,ICL 39,and CYBER 170.IBM 1401 was the first computer brought to Nepal.
MINICOMPUTER
3
“◇ First released in the 1960s.◇ Minicomputer got its name because
of its smaller size and cost compared to mainframe.
◇ The capabilities of a computer is somewhere between mainframe and micro computer. For the reason micro computer is also called midrange computer.
◇ Like mainframe , minicomputer can handle much more input and output than microcomputer.
“◇ It can support 50 terminals and
requires area of around 100 sq ft.◇ This computer is useful for small
business organizations, industries, banks, universities.
◇ Example : prime 9755, HCL, CDC-1700 etc.
MICROCOMPUTER
4
“◇ A computer which is based on
microprocessor, is called microcomputer.
◇ It is a small, low cost digital computer.
◇ It requires small space, can be placed on a table or even kept inside a briefcase.
◇ This computer has central processing unit on a single chip.
◇ It is mainly use in office, house, school, shop, and store.
◇ Example :IBM PC,APPLE/MACINTOSH.
◇ Microcomputer can be further categorized as: non-portable & portable.
“◇ The microcomputer in non-portable
category can be:1. Personal computer2. Workstation◇ The microcomputer in portable
category is:• Laptop• Notebook• Table pc• Palm top• PDA(personal digital assistant).
“Personal computer
workstationNon-portable microcomputers
“PDA PALM TOP
Portable microcomputer
Thanks!Any questions?You can find me at:
◇ Nirajansilwal4@gmail.com
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