Pascal's Calculator is a card from Series 3, part of Cardsmiths Currency, a premium collector line tracing the history of money from ancient coinage to cryptocurrency. It sits at number 43 in a set of 87. The illustration is credited to Diona Nikitenko. It exists in 21 variants, the rarest of which is Onyx, limited to 1.
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Created by French mathematician Blaise Pascal around 1642, Pascal's Calculator was the first commercially available counting machine. The calculator could add and subtract numbers up to 5 digits on the first models and eventually up to 8 digits on later models. It was even possible to do multiplication and division on the calculator through repeated addition and subtraction.
