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/pt/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
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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
By
Lowenski Matos
22 out 2017
0
0
705
Data:
5 jan 1884 ano
Agora
~ 141 years ago
Imagens:
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