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The sumador chino

The sumador chino On a recent motor trip through Mexico, the writer came across an adding device which was referred to as a sumador chino (Chinese adder). A survey of the more available literature on the history of mathematics and on instruments of calculation has uncovered no reference to such a device. The purpose of this communication is to enlist the help of other members in bringing to light whatever may be known concerning the evolution and present status of the sumador chino . http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Communications of the ACM Association for Computing Machinery

The sumador chino

Rogers, James L.
Communications of the ACM , Volume 3 (11) – Nov 1, 1960
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Publisher
Association for Computing Machinery
Copyright
Copyright © 1960 by ACM Inc.
ISSN
0001-0782
DOI
10.1145/367436.367484
Publisher site
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Abstract

On a recent motor trip through Mexico, the writer came across an adding device which was referred to as a sumador chino (Chinese adder). A survey of the more available literature on the history of mathematics and on instruments of calculation has uncovered no reference to such a device. The purpose of this communication is to enlist the help of other members in bringing to light whatever may be known concerning the evolution and present status of the sumador chino .

Journal

Communications of the ACM – Association for Computing Machinery

Published: Nov 1, 1960

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