Category: Calculators
This man is using the smallest

1974
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Calculators were the earliest form of moving mechanical aids to calculation. Pioneered by Wilhelm Schickard and Blaise Pascal in the early 1600s, and improved by Gottfried Wilhelm Leibniz in the later 1600s, mass production had to await the industrial revolution before production facilities could reliably produce the complex interchangeable parts that most of them required.

The first commercially available machines were produced (to the Leibniz design) in the mid-1800s by Charles Xavier Thomas de Colmar and there was a thriving industry by the early 20th century. Most mechanical calculator manufacturers transitioned into the production of electronic machines in the 1960s. Some even attempted to produce small computers, but were usually driven out of business by larger firms.
Brochure List: Calculators Sort:
RESULTS: 8 Items     1
Anything a Computer Can Do this Remarkable New Calculator Can Do More Easily and Far More Conveniently
1973
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HP 9100A Calculator
1968
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Mathematics for the Space Age
1964
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Take an Unhurried Look at the Uncompromising Calculators from Hewlett-Packard
1975
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The New HP-21 Scientific Pocket Calculator
1975
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This man is using the smallest
1974
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Three New Pacs
1974
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Uncompromising Christmas Gifts from Hewlett-Packard
1975
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RESULTS: 8 Items     1
Analog Computers
Calculators
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