Posted by: wasaa | June 22, 2008

Generation of Computers

1.     First Generation (1939-1954) – vacuum tube

2.     Second Generation Computers (1954-1959) – transistor

3.     Third Generation Computers (1959-1971) – IC

4.     Fourth Generation (1971-1990) – microprocessor

5.      Fifth Generation (from 1991 )

 

 

Technical Evolution of Computers

        Increase in speed

          Increase in storage capacity

          Increase in reliability

          Reduction in system cost

 

Period

Circuitry

Input

Output

Storage

Language

Typical computers

1951-1959

Vacuum

Tubes

Punched cards & magnetic tapes

Punched cards

Magnetic Tapes

Assembly

UNIVAC-1

1959-1965

Transistors

Punched cards & magnetic tapes

Punched cards

Magnetic Tapes

High level languages FORTRAN

IBM 1400

1965-1971

Integrated

Circuits

Keyboards

Monitors

Magnetic disks

PASCAL

IBM System/360

 

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Responses

  1. Its cool!Its my asSIGNMENT!


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