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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 jan 500 ano antes da era comum - Abacus

Descrição:

What: A manual aid to calculating that consists of beads or disks that can be moved up and down on a series of sticks or strings within a usually wooden frame.
How: You move the beads to calculate basic math

Adicionado na linha do tempo:

Investigating The History Of The Computer Part 1

ByTimothy McKay
11 out 2017
0
0
561

Data:

1 jan 500 ano antes da era comum
Agora
~ 2527 years ago

Imagens:

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