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Curta Mechanical Calculator

Curta Mechanical Calculator
This was considered to be the most efficient portable calculator until electronic calculators came along in the 1970s. Designed by Curt Herzstark in 1938, and perfected inside a concentration camp during WW2.


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Rating: 2.9 / 5 (866 votes)
Posted by Tibor on April 5, 2011
Hits: 3492

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