DocumentCode
1439809
Title
Two Early Italian Key-Driven Calculators
Author
Hénin, Silvio
Volume
32
Issue
1
fYear
2010
Firstpage
34
Lastpage
43
Abstract
Two almost forgotten keyboard calculators, the first by the Milanese Luigi Torchi (1834) and the second by the Florentine Tito Gonnella (1858), demonstrate technical features much ahead of their time. In particular, Torchi´s calculators seems to incorporate possibly the first direct-multiplication mechanism.
Keywords
calculating apparatus; Italian key driven calculator; Torchi calculator; direct multiplication mechanism; keyboard calculator; Calculators; Clocks; History; Instruments; Keyboards; Printing; Production; Prototypes; Toy manufacturing industry; Writing; 19th century; Italy; Keyboard mechanical calculators; direct multiplication;
fLanguage
English
Journal_Title
Annals of the History of Computing, IEEE
Publisher
ieee
ISSN
1058-6180
Type
jour
DOI
10.1109/MAHC.2010.27
Filename
5430759
Link To Document