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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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1 gen 500 anni a. C. - Abacus

Descrizione:

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

Aggiunto al nastro di tempo:

Investigating The History Of The Computer Part 1

ByTimothy McKay
11 ott 2017
0
0
561

Data:

1 gen 500 anni a. C.
Adesso
~ 2527 years ago

Immagini:

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