This illustration of the inner workings of a Leibniz calculator was originally published in Theatrum arithmetico-geometricum, das ist by Jacob Leupold. The Leibniz calculator, invented by Gottfried ...
Earlier this year, [Dan Maloney] went inside mechanical calculators. Being the practical sort, [Dan] jumped right into the Pascaline invented by Blaise Pascal. It couldn’t multiply or divide. He then ...
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