History of Computers and Computing, Mechanical calculators, 18th century, Anton Braun | Mechanical calculator, Computer history, New business ideas
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Millionaire Calculator – The Fastest Multiplying Machine Of 19th Century - 9Mood
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:max_bytes(150000):strip_icc()/blaise-pascal-calculating-machine-515214884-5c81fc9b46e0fb0001431954.jpg "Biography of Blaise Pascal, Inventor of the Calculator")
Biography of Blaise Pascal, Inventor of the Calculator
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Mechanical calculator - Wikipedia
Stumbled across the first commercially available calculator, used by Harvard astronomers at the turn of the last century. “The Millionaire” debuted in 1899, and could multiply two eight digit numbers in under
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World's first pocket calculator goes up for auction: 'Exceptionally rare' 17th century machine made of wood could fetch £100,000 | Daily Mail Online
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Mechanical calculators: computing without electricity - LOW-TECH MAGAZINE
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George Barnard Grant - History-Computer
File:17th-century-mechanical-calculators -Detail.jpg - Wikimedia Commons
Century Calculator: Compute Centuries Between Two Dates
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