Abstract
THIS is an ingenious work, and would have suited the “fantastical” Armado (“I am ill at reckoning; it fitteth the spirit of a tapster”). By the aid of 1759 figures only the user of it is able to multiply any two numbers each not exceeding 999,999,999, and also to divide one number by another, neither exceeding the same limits.
Automatic Arithmetic: a New System for Multiplication and Division without Mental Labour and without the Use of Logarithms.
By John Sawyer, Public Accountant. (London: George Bell and Sons, 1878.)
Article PDF
Rights and permissions
About this article
Cite this article
Automatic Arithmetic: a New System for Multiplication and Division without Mental Labour and without the Use of Logarithms.. Nature 18, 327 (1878). https://doi.org/10.1038/018327a0
Issue Date:
DOI: https://doi.org/10.1038/018327a0