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2000 BCE
The Abacus
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Period: 2000 BCE to 1200
Prehistoric computering
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Period: 1200 to
the Middle Ages of Computering
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1440
Gutenberg invents modern printing
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Thomas Newcomen constructs the first steam engine
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Philipp Matthaus Hahn constructs the first known mechanical calculator
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Alessandro Volta builds the first electrochemical battery
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Johann Philipp Reis constructs the first Make-and-break telephone
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Period: to
Modern computering
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the First generation of modern computering
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the Second generation of modern computing
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the Third generation of modern computing
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the Fourth generation of modern computing
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the Now now
