About Rabdology

In 1617 a treatise in Latin titled Rabdologiæ and written by John Napier was published in Edinburgh. Printed three years after his treatise on the discovery of logarithms and in the same year as his death, it describes three devices to aid arithmetic calculations.

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Rabdology

English title of a treatise by John Napier on three devices to aid arithmetic calculation

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Facts from Wikidata (CC0).