Generations of computer And Characteristics of a computer

Generations of computer Computer can classified in to five types according to generations i.e

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

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

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

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

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

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

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

ICs with VLSI (Very Large Scale Integration)

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

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

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

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>Generations of computer And Characteristics of a computer Kazakh-American University Nurakhmetova A.E. Generations of computer And Characteristics of a computer Kazakh-American University Nurakhmetova A.E.

>Generations of computer Computer can classified in to five types according to generations i.e 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

>. First generation computer Period : 1945 – 1956 Inviter : Lee de Forest . First generation computer Period : 1945 – 1956 Inviter : Lee de Forest Main processing device : Vacuum tubes

>Vacuum tube Vacuum tube

>Vacuum tubes Vacuum tubes

>Observing Vacuum tube Observing Vacuum tube

>Vacuum tube tester Vacuum tube tester

>Punched cards Punched cards

>Punched card voting Punched card decks Punched card voting Punched card decks

>Punched cards models Punched cards models

>Large punched cards Large punched cards

>. First generation computer Advantages : . It was only electronic device . . First generation computer Advantages : . It was only electronic device . First device to hold memory Disadvantages : . Too bulky i.e large in size . Vacuum tubes burn frequently . They were producing heat . Maintenance problems

>Too bulky i.e large in size Too bulky i.e large in size

>Vacuum tubes burn frequently Vacuum tubes burn frequently

>Maintenance problems Maintenance problems

>. Second generation computer Period : 1956 – 1963 Inviter : William Shockley Main . Second generation computer Period : 1956 – 1963 Inviter : William Shockley Main processing device : Transistor Storage media : Magnetic disc

>Transistor 1 2 Transistor 1 2

>Transistor board Transistor board

>. Second generation computer Advantages : . Size reduced considerably . The . Second generation computer Advantages : . Size reduced considerably . The very fast . Very much reliable Disadvantages : . They over heated quickly . Maintenance problems

>. Third generation computer Period : 1964 – 1971 Inviter : Jack Kilby . Third generation computer Period : 1964 – 1971 Inviter : Jack Kilby Robert Noyce Main processing device : IC (integrated circuit) Storage media : Floppies

>IC (integrated circuit) IC (integrated circuit)

>ICs (integrated circuits) ICs (integrated circuits)

>IC (integrated circuit) IC (integrated circuit)

>. Third generation computer Advantages : . ICs are very small in size . Third generation computer Advantages : . ICs are very small in size . Improved performance . Production cost cheap Disadvantages : . ICs are sophisticated

>. Fourth generation computer Period : 1971– present Inviter : Ted Hoff Main processing . Fourth generation computer Period : 1971– present Inviter : Ted Hoff Main processing device : ICs with VLSI (Very Large Scale Integration) Storage media : Floppies, CDs.

>ICs with VLSI (Very Large Scale Integration) ICs with VLSI (Very Large Scale Integration)

>. Fourth generation computer Advantages : . It is a compact . Less . Fourth generation computer Advantages : . It is a compact . Less power consumption . Production cost is cheap Disadvantages : . No artificial intelligent.

>. Fifth generation computer Period : present and beyond Main processing device : ICs . Fifth generation computer Period : present and beyond Main processing device : ICs with parallel processing Storage media : Video disks Advantages : . Artificial intelligence . Expert system

>. First generation computer . Second generation computer . Third generation computer . Fourth . First generation computer . Second generation computer . Third generation computer . Fourth generation computer . Fifth generation computer Vacuum tubes Transistors ICs ICs with VLSI ICs with parallel processing

>Thank you Thank you