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Gottfried Leibnez, the man to blame for the invention of calculus, uses a stepped cylindrical gear to build his "Stepped Reckoner" which will both add and multiply
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The first typewriter is patented by William Austin Burt. It's slow and clumsy, but it's the first writing machine.
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. It contains fifty 24 inch disks, has a capacity of 5 MB and costs over US$1,000,000
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