Classification of Computers on basis of Sizes

The computers are classified in four types on the based on data processing.

1. Micro computer
2. Mini computer
3. Mainframe computer
4. 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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A
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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Answer ⇒ { B }

B
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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Answer ⇒ { B }

B
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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Answer ⇒ { B }

B
Q : Which of the following is not a hardware processing chip ?
(A) Processing chip
(B) printer
(C) mouse
(D) Java

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Answer ⇒ { B }

D
Q : The monitor of a computer is-
(A) storage device
(B) processing device
(C) input device
(D) output device

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Answer ⇒ { D }

D
Q : Which protocol does Ping use?
(A) TCP
(B) ARP
(C) ICMP
(D) BootP
(E) None of these

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Answer ⇒ { C }

C
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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Answer ⇒ { D }

D
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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Answer ⇒ { A }

A
Q : Verification of a login name and password is known as_____.
(A) Configuration
(B) Accessibility
(C) Authentication
(D) logging in
(E) None of these
Answer ⇒ ??