A Vintage Mechanical Calculator Spins Wildly While Trying to Divide by Zero

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Old computer / mechanical calculator BK-1 - http://electronics.goshoppins.com/vintage-computing/old-computer-mechanical-calculator-bk-1/

Pascal's Calculator (1670). A mechanical calculator that could add and subtract, built by the philosopher Blaise Pascal in the 1670s. The system of cranks and gears is comparable in complexity to the Antikythera mechanism from 1000 years earlier.

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Rokli Mechanical Calculator Front/Right

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