Overview – Types and Classification of Computer, meaning and concept of mini computers, meaning and concept of micro computer, meaning and concept of mainframe computer, meaning and concept of super computer
Types of Computer System:
Classification of computer: Modern computers are electronic and digital. These digital computers
are broadly classified into the following four categories depending upon their
performance, size and cost.
·
Microcomputers
·
Minicomputers
·
Mainframes
·
Super Computers
Micro computers :
What is Micro Computer: These are low cost small size computers. These
have been named as micro computers on account of their employing
microprocessor. They represent a typically single-user systems, meaning that a
microcomputer can be used by only one user at a time. The personal computers
(PC) that you are using in your computer lab are microcomputers. These are
named personal because they can be used by any person for his personal use.
Mini computers:
What is Mini Computer: Minicomputers perform better, are larger in
size and cost more than microcomputers. They also possess larger
storagecapacities and are faster in speed. Normally, they are designed to
support more than one user at a time. That is why these may also be used as
Server in LAN. Minicomputers, thus a multiuser computer, can support ten to
hundreds of users simultaneously.
Mainframes:
What is Mainframe Computer: Mainframe computers are more powerful and
faster than minicomputers. They have a quite larger storage capacity and are
able to support many hundreds of users simultaneously. Their real values lies
in their processing power to handle large data base systems i.e. handling the
records of thousands of employees working in a organization.
Super Computers:
What is Super Computer: Where microcomputers lie at the lowest end of the computer range,
the super computers stand at the highiest end of computer range. They are most
powerful, fastest and most expensive machines and thus can be afforded only by
the rare organization working on the national level. These computers have
remarkable performance as billions of calculations may be performed by them in
a second. Some of the arears in which super computers are being used may be
mentioned as sophisticated scientific and biomedical researches, weather
forecasting, designing of the sophisticated machines and warfare equipments
etc.
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