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The Arithmometer (1 jan 1820 ano – 31 dez 1820 ano)

Descrição:

The arithmometer was invented by Thomas de Colmar. It was the first mechanical calculator. It used rotating drum to perform calculations. This device kicked off the start of the mechanical calculator industry.

Adicionado na linha do tempo:

History of Calculators

BySophia Myong
26 out 2019
0
0
259

Data:

1 jan 1820 ano
31 dez 1820 ano
~ 12 months

Imagens:

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