Sagar dixit eit

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PPT on Essentials of Information Technology.

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Computer Generations

SUBMITTED TO SUBMITTED BY

NIDHI BIRTHARE SAGAR DIXIT MCA 1ST SEM

First Genra-

tion

Second Genra-

tion

Third Genra-

tion

Fourth Genra-

tion

Fifth Genra-

tion

Se-ries 1

1951 1959 1965 1975 1990

History of computer

English mathematician,

engineer, philosopher and

inventor.

Originated the concept of the programmable computer, and designed one

Charles Babbage Father of computer 1791-1871:-

First Generations 1951- 1958:ENIAC The ENIAC (Electronic Numerical Integrator and Computer) was unveiled in 1946: the first all-electronic, general-purpose digital computer

Vacuum Tubes

Magnetic Drum

4,000 bits

Hard Wire Programs in computers

IBM 650, Univac I

ENIAC

Second Generation 1959-1964

Transistors

Magnetic Cores

32,000 bits

Punch Cards

CDC, GE, IBM

Third Generation 1965-1974

Silicon

Chips (Integrated

circuits)= IC

Cores, IC’s

128,000

bits

Keyboard

Entry

IBM, NCR,

Honeywell

Fourth Generation 1975-1989

Silicon Chips (Large scale integrated circuits)=

LSI

IC’s, LSI’s

Read programs off

disks

Apple, Xerox, Texas Instrument,

Hewlett-Packard

Fifth Generation 1990-present

Silicon Chips ( Very Large Integrated

Circuits) VLSI

Nanotechnology

Present technology