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Oct 1, 2018

Computer Notes


Computer Notes

What is Computer ?

Computer is an electronic device that is intended to work with Information. The term PC is derived from the Latin expression 'computare' which means a programmable machine. PC can not do anything without a Program. It mainly uses  decimal numbers through a string of double digits.

The basic types of computers are :

  •     Minicomputer
  •     Microcomputer
  •     Supercomputer
  •     Mainframe Computer

Minicomputers :

Minicomputers are utilized by private companies and firms. Minicomputers are additionally called as "Midrange Computers". These are little machines and can be obliged on a circle with not as handling and information stockpiling capacities as super-PCs and Mainframes. These PCs are not intended for a solitary client. Singular divisions of an expansive organization or associations utilize Mini-PCs for particular purposes. For instance, a creation division can utilize Mini-PCs for observing certain generation procedure.

The well known Minicomputers are :

  • SDS-92
  • K-202
  • Texas Instrument TI-990
  • IBM Midrange PCs

Microcomputer :

PCs, workstations, individual advanced right hand (PDA), tablets and cell phones are a wide range of microcomputers. The smaller scale PCs are generally utilized and the quickest developing PCs. These PCs are the least expensive among the other three kinds of PCs. PCs, Gaming supports, Sound and Navigation arrangement of an auto, Netbooks, Notebooks, PDA's, Tablet PC's, Smartphones, Calculators are all kind of Microcomputers.The Micro-PCs are uncommonly intended for general use like stimulation, training and work purposes. Surely understood makers of Micro-PC are Dwell known companies like Samsung , Apple etc

Supercomputer :

The most ground-breaking PCs as far as execution and information handling are the Supercomputers. These are particular and assignment particular PCs utilized by extensive associations. These PCs are utilized for research and investigation purposes, similar to NASA utilizes supercomputers for propelling space transports, controlling them and for space investigation reason.The supercomputers are extremely costly and huge in estimate. It very well may be suited in expansive cooled rooms; some super PCs can traverse a whole building.

Application of Supercomputers are  :

Atomic weapons testing:

Supercomputers are utilized to run weapon recreation that can test the Range, exactness and effect of Nuclear weapons.

Space Exploration:

Supercomputers are utilized to think about the root of the universe, the dim issues. For these investigations researcher utilize IBM's intense supercomputer "Roadrunner" at National Laboratory Los Alamos.

Climate Forecasting:

Supercomputers are utilized for climate determining, and to contemplate the nature and degree of Hurricanes, Rainfalls, windstorms, and so forth.


Supercomputers are utilized to ponder the Earthquakes wonder. Other than that supercomputers are utilized for normal assets investigation, similar to flammable gas, oil, coal, and so on.

The some of the Well known Supercomputers are given below :

  • IBM's SuperMUC in Germany
  • Fujitsu's K Computer in Japan
  • IBM's Sequoia, in United States
  • IBM's Mira in United States
  • NUDT Tianhe-1A in China

Mainframe-computers :

In spite of the fact that Mainframes are not as intense as supercomputers, but rather positively they are very costly in any case, and numerous vast firms and government associations utilizes Mainframes to maintain their business tasks. The Mainframe PCs can be suited in expansive cooled rooms on account of its size. Super-PCs are the quickest PCs with huge information stockpiling limit, Mainframes can likewise process and store expansive measure of information. Banks instructive establishments and insurance agencies utilize centralized server PCs to store information about their clients, understudies and protection arrangement holders.

Eg: of Mainframe Computers are :

  • Fujitsu's ICL VME
  • Hitachi's Z800
  • Prevalent Mainframe PCs 

Points to Remember :

  • The main computerized PCs were produced between 1940 to 1945.
  • Konrad Zuse, In 1941 created "Z3", the main present day processing machine.
  • Konrad Zuse is viewed as "the designer of PCs".
  • ENIAC (Electronic Numerical Integrator and Computer) was the main US-constructed electronic PC.
  • ENIAC was produced by John Mauchly and J. Presper Eckert.
  • The world's originally put away program PC was "Manchester Baby" created in 1948.
  • In the first era of PCs, Computers were worked with vacuum tubes.
  • In 1957, FORTRAN (Formula Translator) was presented.
  • PCs were worked with Transistors in the second era of PCs.
  • In the third era of PCs, Transistors were supplanted with Integrated Circuits.
  • In the fourth era of PCs, Microprocessors were utilized to constructed Computers.
  • In 1981, IBM PC with Intel processors and MS-Dos were presented.
  • In 1984, Macintosh Computers were presented.
  • In 1985, Microsoft Windows GUI was presented.
  • In 1989, Intel 486 PCs were presented.
  • In 1990, Windows 3.0 working System for PCs was propelled..
  • In 1991, the World Wide Web was acquainted with the overall population.
  • In 1991, Linux working was produced.
  • In 1993, Intel's Pentium was presented.
  • In 1995, windows 95 working framework was made discharged.
  • In June, 1996 Windows 4.0 working framework was discharged.
  • On February 17, 2000, Windows 2000 was discharged.
  • Windows XP was discharged on 25th October, 2001.
  • On November 30th, 2006 Windows Vista was discharged.
  • On July 22nd 2009, Windows 7 was presented.
  • On Windows 8, the successor of Windows 7 was discharged on October 28th, 2012.

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