Classification of Computers on basis of Sizes
The computers are classified in four types on the based on data processing.
- Micro computer
- Mini computer
- Mainframe computer
- Super computer
1 . Micro Computer:
- Micro computers are the computers with having a microprocessor chip as it central processing unit.
- Originated in late 1970s.
- First micro computer was built with 8 bit processor.
- Microcomputer is known as personal computer.
- Designed to use by individual whether in the form of pc’s, workstation or notebook computers.
- Small in size and affordable for general people.
- Ex: IBM PC, IBM PC/XT, IBM PC/AT
2. Micro Computer:
- Mini computers are originated in 1960s.
- Small mainframes that perform limited tasks.
- Less expensive than mainframe computer.
- Mini computers are Lower mainframe in the terms of processing capabilities.
- Capable of supporting 10 to 100 users simultaneously.
- In 1970s it contains 8 bit or 12 bit processor.
- Gradually the architecture requirement is grown and 16 and 32 bit.
- Minicomputers are invented which are known as supermini computers.
- Ex: IBM AS400
3. Mainframe Computer:
- A very powerful computer which capable of supporting thousands of user simultaneously.
- It contains powerful data processing system.
- It is capable to run multiple operating systems.
It is capable to process 100 million instructions per second. - Mainframes are very large & expensive computers with having larger internal storage capacity & high processing speed.
- Mainframes are used in the organization that need to process large number of transaction online & required a
- computer system having massive storage &processing capabilities.
- Mainly used to handle bulk of data & information for processing.
- Mainframe system is housed in a central location with several user terminal connected to it.
- Much bigger in size & needs a large rooms with closely humidity & temperature.
- IBM & DEC are major vendors of mainframes.
- Ex : MEDHA, SPERRY, IBM, DEC, HP, HCL
4. Super Computer:
- Most powerful & most expensive computer.
- Used for complex scientific application that requires huge processing power.
- Used multiprocessor technology to perform the calculation very speedy.
- They are special purpose computers that are designed to perform some specific task.
- The cost of the super computer is depended on its processing capabilities &configuration.
- The speed of modern computer is measured in gigaflops, teraflops and petaflops.
o Gigaflops= 109 arithmetic operation per second.
o Teraflops=1012 arithmetic operation per second.
o Petaflops=1015 arithmetic operation per second. - Ex: PARAM , EKA, BLUE GENE/P
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Basic Computer Questions
Q : The main system board of the computer is called ____.
(A) Motherboard
(B) Processor
(C) Microchip
(D) None of these
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Q : Which of the following system components is the brain of a computer?
(A) Circuit board
(B) CPU
(C) Memory
(D) Network card
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Q : What is the built-in permanent memory in a computer called?
(A) RAM
(B) ROM
(C) CPU
(D) CD-ROM
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Q : Which of the following is the full form of NTFS?
(A) New Tree File system
(B) New Technology file system
(C) New Table file system
(D) Both B and C
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Q : Which of the following is not a hardware processing chip ?
(A) Processing chip
(B) printer
(C) mouse
(D) Java
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Q : The monitor of a computer is-
(A) storage device
(B) processing device
(C) input device
(D) output device
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Q : Which protocol does Ping use?
(A) TCP
(B) ARP
(C) ICMP
(D) BootP
(E) None of these
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Q : If you wish to extend the length of the network without having the signal degrade, you would use a ___.
(A) Gateway
(B) Router
(C) Modem
(D) Repeater
(E) Resonator
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Q : A series of instructions that tells a computer what to do and how to do it is called a ______.
(A) program
(B) command
(C) user response
(D) processor
(E) None of these
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Q : Verification of a login name and password is known as_____.
(A) Configuration
(B) Accessibility
(C) Authentication
(D) logging in
(E) None of these
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