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Herman Hollerith calculates the 1880 census with a punch card system. IBM is soon after created by Hollerith.
http://www.livescience.com/20718-computer-history.html -
"J. V. Atanasoff in September 1939 with the assistance of his graduate student Clifford Berry, the Atanasoff–Berry Computer
The key ideas employed in the ABC included binary math and Boolean logic to solve up to 29 simultaneous linear equations. The ABC had no central processing unit (CPU), but was designed as an electronic device using vacuum tubes for digital computation.
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The Electronic Numerical Integrator and Computer, or ENIAC, was created under the direction of John Mauchly and J. Presper Eckert of Penn's Moore School of Electrical Engineering (now the School of Engineering and Applied Science).
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1954: Fortran is created. The first computer programming language. link text
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Intel creates the Intel 1103, the first RAM card.
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Kenbak-1 is introduced as the first personal computer for only $750.00.
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The First Floppy disk is created
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1981: IBM launches its first PC that runs on MS-DOS
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1985: Microsoft announces Windows to compete with Apple
