4. “
◇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.
5. “
◇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.
7. “
◇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.
10. “
◇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.
11. “
◇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.
13. “
◇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.
14. “
◇The microcomputer in non-portable
category can be:
1. Personal computer
2. Workstation
◇ The microcomputer in portable category
is:
• Laptop
• Notebook
• Table pc
• Palm top
• PDA(personal digital assistant).
