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jan 5, 1884 - Dorr Felt, Comptómetros.
Description:
El comptómetro fue la primera calculadora mecánica de tecla pulsada, de éxito comercial, patentada en los Estados Unidos en 1887 por Dorr E. Felt.
Added to timeline:
Período Pre-Informático
By
Lowenski Matos
22 Oct 2017
0
0
705
Date:
jan 5, 1884
Now
~ 141 years ago
Images:
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