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Evolution of Computer Hardware
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The Abacus
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The Slide Rule (invented early 1600s)
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The Pascaline (invented by Blaise Pascal, circa 1642) This is the front view.
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The Pascaline (rear view)
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The Reckoner (by Gottfried Wilhelm von Leibniz, circa 1700)
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The Difference Engine (by Charles Babbage, 1822)
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The Analytical Engine (by Babbage, circa 1830)
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Joseph Marie Jacquard’s Loom circa 1830 (note the punch cards)
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Hollerith Machine
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Hollerith Detail
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The Mark I (1942) (8 feet tall, 51 feet long, 5 tons)
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The Mark I… used paper tape to store data and program instructions
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Howard Aiken, a Ph.D student at Harvard University inside the Mark I
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Electronic Numerical Integrator and Computer (ENIAC)
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Another view of ENIAC
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Programming ENIAC by manipulating its vacuum tubes
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Harvard Mark II
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MIT Whirlwind (1948)
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UNIVAC… the first general-purpose computer for commercial use (late 1940s)
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After Vacuum Tubes came Transistors This is the first point-contact transistor.
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IBM 701 (1953)
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IBM 704 (1956)
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IBM 7090
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IBM 360 (1964)
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IBM S/390
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And the future of computers?
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