Computer

Февраль 11, 2021

Содержание

2. Generations of computer Computer can classified in to five types according to generations i.e time period
3. . First generation computer Period : 1945 – 1956 Inviter : Lee de Forest Main processing
4. Vacuum tube
5. Vacuum tube
6. Vacuum tube
7. Vacuum tube
8. Vacuum tubes
9. Observing Vacuum tube
10. Observing Vacuum tube
11. Vacuum tube tester
12. Punched cards
13. Punched card voting Punched card decks
14. Punched cards models
15. Large punched cards
16. . First generation computer Advantages : . It was only electronic device . First device to
17. Too bulky i.e large in size
18. Vacuum tubes burn frequently
19. Maintenance problems
20. . Second generation computer Period : 1956 – 1963 Inviter : William Shockley Main processing device
21. Transistor 1 2
22. Transistor board
23. . Second generation computer Advantages : . Size reduced considerably . The very fast . Very
24. . Third generation computer Period : 1964 – 1971 Inviter : Jack Kilby Robert Noyce Main
25. IC (integrated circuit)
26. ICs (integrated circuits)
27. IC (integrated circuit)
28. . Third generation computer Advantages : . ICs are very small in size . Improved performance
29. . Fourth generation computer Period : 1971– present Inviter : Ted Hoff Main processing device :
30. ICs with VLSI (Very Large Scale Integration)
31. . Fourth generation computer Advantages : . It is a compact . Less power consumption .
32. . Fifth generation computer Period : present and beyond Main processing device : ICs with parallel
33. . First generation computer . Second generation computer . Third generation computer . Fourth generation computer
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Слайд 2

Generations of computer
Computer can classified in to five types according to

Generations of computer Computer can classified in to five types according to

generations i.e time period

. First generation computer
. Second generation computer
. Third generation computer
. Fourth generation computer
. Fifth generation computer

Слайд 3

. First generation computer
Period : 1945 – 1956
Inviter : Lee de Forest
Main

. First generation computer Period : 1945 – 1956 Inviter : Lee

processing device : Vacuum tubes

Слайд 4

Vacuum tube

Vacuum tube

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Vacuum tube

Vacuum tube

Слайд 6

Vacuum tube

Vacuum tube

Слайд 7

Vacuum tube

Vacuum tube

Слайд 8

Vacuum tubes

Vacuum tubes

Слайд 9

Observing Vacuum tube

Observing Vacuum tube

Слайд 10

Observing Vacuum tube

Observing Vacuum tube

Слайд 11

Vacuum tube tester

Vacuum tube tester

Слайд 12

Punched cards

Punched cards

Слайд 13

Punched card voting
Punched card decks

Punched card voting Punched card decks

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Punched cards models

Punched cards models

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Large punched cards

Large punched cards

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. First generation computer
Advantages :
. It was only electronic device
. First

. First generation computer Advantages : . It was only electronic device

device to hold memory
Disadvantages :
. Too bulky i.e large in size
. Vacuum tubes burn frequently
. They were producing heat
. Maintenance problems

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Too bulky i.e large in size

Too bulky i.e large in size

Слайд 18

Vacuum tubes burn frequently

Vacuum tubes burn frequently

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Maintenance problems

Maintenance problems

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. Second generation computer
Period : 1956 – 1963
Inviter : William Shockley
Main processing

. Second generation computer Period : 1956 – 1963 Inviter : William

device : Transistor
Storage media : Magnetic disc

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Transistor
1
2

Transistor 1 2

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Transistor board

Transistor board

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. Second generation computer
Advantages :
. Size reduced considerably
. The very

. Second generation computer Advantages : . Size reduced considerably . The

fast
. Very much reliable
Disadvantages :
. They over heated quickly
. Maintenance problems

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. Third generation computer
Period : 1964 – 1971
Inviter : Jack Kilby
Robert

. Third generation computer Period : 1964 – 1971 Inviter : Jack

Noyce
Main processing device : IC (integrated circuit)
Storage media : Floppies

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IC (integrated circuit)

IC (integrated circuit)

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ICs (integrated circuits)

ICs (integrated circuits)

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IC (integrated circuit)

IC (integrated circuit)

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. Third generation computer
Advantages :
. ICs are very small in size

. Third generation computer Advantages : . ICs are very small in

. Improved performance
. Production cost cheap
Disadvantages :
. ICs are sophisticated

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. Fourth generation computer
Period : 1971– present
Inviter : Ted Hoff
Main processing device

. Fourth generation computer Period : 1971– present Inviter : Ted Hoff

: ICs with VLSI
(Very Large Scale Integration)
Storage media : Floppies, CDs.

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ICs with VLSI
(Very Large Scale Integration)

ICs with VLSI (Very Large Scale Integration)

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. Fourth generation computer
Advantages :
. It is a compact
. Less power

. Fourth generation computer Advantages : . It is a compact .

consumption
. Production cost is cheap
Disadvantages :
. No artificial intelligent.

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. Fifth generation computer
Period : present and beyond
Main processing device : ICs

. Fifth generation computer Period : present and beyond Main processing device

with parallel processing
Storage media : Video disks

Advantages :
. Artificial intelligence
. Expert system

Слайд 33

. First generation computer
. Second generation computer
. Third generation computer
. Fourth generation

. First generation computer . Second generation computer . Third generation computer

computer

. Fifth generation computer

Vacuum tubes

Transistors

ICs

ICs with VLSI

ICs with parallel processing