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2. Generation Of Computer
1. First Generation Of Computer
2. Second Generation Of Computer
3. Third Generation Of Computer
4. Fourth Gneration Of Computer
5. Fifth Generation Of Computer

3. First Generation Of Computer
The computer of this generation use electronic
devices know as Vacuum tubes and Punched cards
to record data .
Period : 1940-195
Size : Very Huge (Size of 3 room )
Devices Used : Vacuum Tubes
Examples : Mark1 , UNIVAC-1 ,EDVAC
, EDSAC

5. Second Computer Of Generation
These computers used Transistors in
place of Vacuum Tubes .
Period: 1957-1963
Size: Smaller than first generation of
computer
Device Used : Transistors

7. Third Generation Of Computer
Integrated circuits are made by many Transistors.
Period : 1964 - 1971
Size : Much smaller than second generation of computer
Device Use : Integrated Circuits

9. Forth Generation Of Computer
A large number of integrated circuits were put
toghether in a material called Silicon chips .
Silicon chips were reliable and cheap .
Period : After 1972 to present
Size : Very small size
Devices Used : Silicon Chips

11. Fifth generation of computer
These computers are based on artifical intelligence .
Parallel processing and superconductors are used .
Period : Present and Beyond
Size : Verry small
Devices Used : Superconducters
Examples : Robots