How 10-key Adding Machines Work
8:42
YouTubeMechanicalComputing
How 10-key Adding Machines Work
This animation explains how the Remington-Rand Model 73A adding machine works. The design of the Model 73A is similar that of most 10-key mechanical calculators produced in the 1940's and 50's.
23.2K viewsFeb 16, 2013
Adding machine History
Amazon.com: Adding Machine: Office Products
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amazon
Jul 8, 2012
The Adding Machine (1969)
The Adding Machine (1969)
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