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1 janv. 2000 av. J.-C. - The Abacus

Description:

This is hand operated mechanical calculator using beads on rods, first used by Sumerians and Egyptians around 2000 BC.

Ajouté au bande de temps:

The Calculator

13 sept. 2017

0

0

678

Date:

1 janv. 2000 av. J.-C.

Maintenaint

~ Il y a 4028 ans

Les images:

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