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22 h 11 m, 13 dic 1642 año - Blaise Pascal invented the mechanical calculator and Pascal's calculator.
Descripción:
It showed that math can be used to build general tools to simplify things.
Añadido al timeline:
30 ene 2018
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CP timeline - Tiana Zhao
fecha:
22 h 11 m, 13 dic 1642 año
Ahora mismo
~ 381 years ago