Only a handful of the original Pascaline machines still exist today -- most of which are held in museums.
CNN: Vintage tech 'firsts,' including Apple 1, up for auction
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The Pascaline was a significant breakthrough at the time of its invention, demonstrating, as it did, how complex arithmetic could be carried out by a machine.
CNN: Vintage tech 'firsts,' including Apple 1, up for auction
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The "Pascaline" was operated with a stylus to turn digit-wheels.
CNN: Vintage tech 'firsts,' including Apple 1, up for auction