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6 h 46 m, 8 feb 1642 año - Blaise Pascal (1623-1662) inventó y construyó la primera sumadora mecánica. La pascalina hacía sumas y restas.

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angel verdin

Byeduardo
7 feb 2018

fecha:

6 h 46 m, 8 feb 1642 año
Ahora mismo
~ 382 years ago

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