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Two Early Italian Key-driven Calculators (1834 and 1858)

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1 Author(s)
Henin, S ; , MIlan

This paper describes two almost forgotten key-operated calculators, the first by the Milanese Luigi Torchi (1834) and the second by the Florentine Tito Gonnella (1858). The first, in particular, seems also to present an unprecedented feature, possibly the first direct-multiplication mechanism.

Published in:

Annals of the History of Computing, IEEE  (Volume:PP ,  Issue: 99 )