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1 gen 1200 anni - Suan-Pan Abacus

Descrizione:

A Chinese abacus[1] used for performing basic number calculations.

[1] https://www.ee.ryerson.ca/~elf/abacus/history.html

Aggiunto al nastro di tempo:

history of computing hardware

2 mar 2021

0

0

255

Data:

1 gen 1200 anni

Adesso

~ 826 years ago

Immagini:

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