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4 ene 500 año aC - Abacus (counting frame) Counting tool that consists of beads or disks that can be moved up/down to assist in counting or keeping track of data
Añadido al timeline:
History of computer Project
By
Emily DeVore
20 oct 2017
0
0
377
fecha:
4 ene 500 año aC
Ahora mismo
~ 2526 years ago
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