HISTORY OF COMPUTERS

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History of Computers : 

History of Computers

Over 5,000 years ago… : 

Over 5,000 years ago…

1600’s : 

1600’s Blaise Pascal Pascaline Gottrfried von Leibniz Improved on Pascaline

1600’s : 

1600’s Blaise Pascal Pascaline

Early 1800’s : 

Early 1800’s Joseph Marie Jacquard Jacquard’s Loom Charles Xavier Thomas Arithmometer

Early 1800’s : 

Early 1800’s Jacquard’s Loom

Mid-1800’s : 

Mid-1800’s Charles Babbage Countess Ada Lovelace Father of computers First computer programmer

Mid 1800’s : 

Mid 1800’s Analytical Engine

Late 1800’s : 

Late 1800’s

1945 - 1956 : 

1945 - 1956 First Generation Computers Used Vacuum tubes Each computer had its own machine language Examples: Colossus ENIAC UNIVAC

1945 - 1956 : 

1945 - 1956 ENIAC

1945 - 1956 : 

1945 - 1956 UNIVAC

Slide 13: 

EDVAC

Slide 14: 

EDSAC

1945 - 1956 : 

1945 - 1956 Term “Computer Bug” coined by Admiral Grace Hopper

1956 - 1963 : 

1956 - 1963 Second Generation Computers Transistors replaced vacuum tubes Era of the punch cards Examples LARC Stretch IBM 1401

1956 - 1963 : 

1956 - 1963 IBM 7094 IBM 1401

1964 - 1971 : 

1964 - 1971 Third Generation Computers Integrated Circuits replaced transistors Operating System used Examples IBM System 360 Cray

1964 - 1971 : 

1964 - 1971 Cray 23 Cray 29

1964 - 1971 : 

1964 - 1971 IBM System 360

1971 - present : 

1971 - present Fourth generation computers Large Scale Integration (LSI) Very Large Scale Integration (VLSI) Ultra Large Scale Integration (ULSI) Era of the Personal Computer Pioneering Examples Commodore Radio Shack Apple IBM

1971 - present : 

1971 - present IBM PC 1 Dell Dimension 8200

1971 - present : 

1971 - present ASCI White Most powerful computing platform ever built! 12.3 TeraOps (12,300,000,000,000 operations per second)

1971 - present : 

1971 - present 1981 – 2 million computers in use 1982 – 5.5 million computers in use 1992 – 65 million personal computers

Slide 25: 

QUANTUM COMPUTER Next generation computer which process 0’s and 1’s simultaneously by using atoms

Slide 26: 

PEN COMPUTER Latest computers with high definition

Slide 27: 

Any questions ?

Slide 28: 

THANK ‘Q’