GENERATION OF COMPUTER:-

          -::GENERATION::-

Generation is computer terminology is  the change in technology. A Computer is being used initially. That generation turn was used to warying hardware technology.

There was totally 5 generation none till that ---

(1) First generation.

(2) Second generation.

(3) Third generation.

(4) Fourth generation.

(5) Fifth generation.

    -:: First generation:-

The period of first generation  is 1946-1959. That generation based on VACCUM TUBES.  This tubes like electric bulb  produced a lot of heat and were prone to frequent fusing of the installations , therefore,were very expensive and could be afforded only by very large organisations.

• In this generation mainly batch processing operating system were used . The computer in this generation used machine code as programming language.
• Some Computer of this generation  ENIAC , EDVAC , UNIVAC , IBM701, IBM650.

    -:: Second generation:-

The period of the second generation is 1959-1965 . That generation based on TRANSISTORS  were cheaper consumed less power,more compact in size,more reliable and faster than the first generation machine made of vacuum tubes .  

• In this generation assembly language and high level programming language like FORTRAN , COBOL ,were used .
• There were Batch processing and Multiprogramming operating system used.
• The computer of this generation is IBM1600, IBM7094,  CDC1604,  CDC3600,  UNIVAC1108 .

   -:: Third generation:-

The period of the third generation is 1965-1971. That generation based on INTEGRATED CIRCUIT. A single IC has many transistor , registers and capacitors along with the associated circuitry. 

• In this generation Remote processing ,Time sharing,  Real time ,Multi-programming operating system were used . 
• High level language FORTRAN -ll to lV , COBOL, PASCAL,BASIC,ALGOL-68 etc were used during this generation.
• Some Computer of this generation were IBM360series , HONEYWELL -6000 series, PDP,IBM 370/168,TDC 316.

  -:: Fourth generation:-

The period of the fourth generation is 1971-1982. This generation based on MICROPROCESSOR. Fourth generation used very large scale integrated circuit (VLSI). This generation computers became more powerful, compact insize , reliable and affordable. As a result ,it gave rise to personal computer revolution.

• In this generation Time sharing,Real time, Network,Distributed operating system were used.
• All the higher lebel Language like C and C++ ,D Base etc were used in this generation.
• Some Computer of this generation were DEC10 STAR1000, PDP2,  CRAY1(super computer).

  -:: Fifth generation:-

The period of the fifth generation is 1882 to onwards .This generation based on ARTIFICIAL INTELLIGENCE.

• This generation based on parallel  processing  hardware and AI (artificial intelligence) Software.
• All the higher level language like C and C++ ,JAVA , NET etc are used in this generation.
• Some of the computer in this generation LAPTOP, NOTEBOOK, ULTRA BOOK , CROMO BOOK, DESKTOP.

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