User:Robert W King/Sandbox

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Revision as of 11:50, 21 May 2007 by imported>Robert W King (→‎Test of timeline)
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Test of timeline

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B.C.
Slamis Tablet
300 B.C. - 500 A.D.
Roman Hand Abacus

Circla 1200 A.D. → modern Chinese Abacus

?? A.D. → the Codex Madrid written by Leonardo Da Vinci

1642

Pascal invents the Pascaline

1821

Babbage creates the Difference 
Engine No. 1

??

Babbage creates the 
Analytical Engine

1884

Hollerith's Electric 
Tabulating System

1890

Hollerith improves his 
system by adding a 
keyboard

1936-1938

Konrad Zuse creates 
the Z1

1936-1939

Z2

1939-1941

Z3

1943

First Colossus prototype 
by Tommy Flowers

1944

Construction of ASCC, or 
Harvard Mk I by Howard Aiken

1946

ENIAC construction complete
Orders from Churchill to 
destroy all 10 Colossus machines

1951

UNIVAC delivered to the 
census bureau

1952

EDVAC becomes operational

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