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1 gen 1850 anni - Primera sumadora de teclado.

Descrizione:

El teclado apareció en una máquina inventada en Estados Unidos en 1850. Podían sumarse una secuencia de dígitos pulsando unas teclas sucesivas

Aggiunto al nastro di tempo:

Ordenadores

5 ott 2018

0

0

662

Data:

1 gen 1850 anni

Adesso

~ 175 years ago

Immagini:

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