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1939
The ABC was the first electronic digital computer, invented by John Vincent Atanasoff
Bletchley Park’s Colossus
1943
The ENIAC 1946
John Presper Echert (1919-1995) And John Mauchly (1907-1980) Of the University of Pennsylvania Moore School of engineering
The ENIAC:
Electronic Numerical Integrator and Computer
ENIAC’s Wiring!!!
Programming the ENIAC
Programming in today
A reel-to-reel tape drive
The IBM 7094, a typical mainframe computer
Electronic Digital computers
From John Vincent Atanasoff’s 1939 Atanasoff-Berry Computer (ABC) To The present day
Alan Turing [1912-1954]
The Turing machine Aka The universal machine 1936
Preparing the cards with the pattern for the cloth to be woven
A close-up of a Jacquard card
By selecting particular cards for Jacquard's loom you defined the woven pattern
John Vincent Atanasoff
[1903-1995]
Physics Prof AT Iowa State University, Ames, IA
Clifford Berry
[1918-1963]
PhD student of Dr.Atanasoff’s
The Atanasoff Berry Computer [ABC]
Two types of computer punch cards
The Harvard Mark I [1944] Aka IBM’s Automatic Sequence Controlled Calculator [ASCC]
The first computer BUG
Rear Admiral Dr.Grace Murray Hopper
The original IBM Personal Computer (PC)
The Altair 8800, the first PC
Nowadays …
“What hath God wrought!”
[first telegraph message sent by Samuel Morse,1844] Electronic and computing technology quickly progressed-at an everaccelerating paceFrom vacuum tubes [Lee de Forrest, the audion , 1907] To transistors [ William Shockley et al,1947] To semiconductors [Jack Kilby & Robert Noyce,1958] To microprocessors [M.E.”Ted”Hoff,1971] To networking and the Internet [Vinton Cerf & Robert Kahn,1982] To the World Wide Web [Tim Berners-Lee,1991] And beyond…
An original set of Napier's Bones [photo courtesy IBM]
A more modern set of Napier's Bones
Oughered’s[1621] and Schickard’s [1623] slide rule
A slide rule
The Teletype was the standard mechanism used to interact with a time-sharing computer
Three views of paper tape
An IBM Key Punch machine which operates like a typewriter except it produces punched cards rather than a printed sheet of paper
Whatever next?...
The end…
Thanks for your attention !
A Brief History of Computers
Prepared by
MaoOu Ran ZengHui Xiang
20082095 20082098
School of software engineering
Pre-Mechanical Computing:
From Counting on fingers to pebbles To hash marks on walls To hash marks on bone To hash marks in sand
Joseph-Marie Jacquard and his punched card controlled looms[1804]
Jacquard's Loom Loom showing the threads and the punched cards Jacquard's showing the threads and the punched cards
Blaise Pascal’S Pascaline[1645]
Pascal's Pascaline [photo © 2002 IEEE]
Gottfried Wilhelm von Leibnitz’s Stepped Reckoner[1674]
Leibniz's Stepped Reckoner (have you ever heard "calculating" referred to as "reckoning"?)
Mechanical computers: The abacus [c,3000 BCE]
Mechanical computers
From The abacus C.4000 BCE To Charles Babbage And his Difference Engine[1812]
Napier’s Bones and Logarithms [1617]
Baidu Nhomakorabea
Charles Babbage[1791-1871] the father of computers
Charles Babbage’s Difference Engine
A small section of the type of mechanism employed in Babbage's Difference Engine [photo © 2002 IEEE]
Electro-mechanical computers
From Herman Hollerith’s 1890 Census Counting Machine To Howard Aiken And the Harvard Mark I [1944]
Herman Hollerith and his Census Tabulating Machine [1884]
