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5 jan 1884 ano - Dorr Felt, Comptómetros.

Descrição:

El comptómetro fue la primera calculadora mecánica de tecla pulsada, de éxito comercial, patentada en los Estados Unidos en 1887 por Dorr E. Felt.

Adicionado na linha do tempo:

Período Pre-Informático

ByLowenski Matos

22 out 2017

0

0

775

Data:

5 jan 1884 ano

Agora

~ 141 years ago

Imagens:

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