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21 jan 2395 ano antes da era comum - The Abacus

Descrição:

The abacus is thought to be invented in Babylon around this time, it is the "first automatic computer." This is important because it was the first way for people to do calculations using a device.

Adicionado na linha do tempo:

Data:

21 jan 2395 ano antes da era comum
Agora
~ 4422 years ago

Imagens: