2 ore 52 min, 2 gen 232 anni a. C. - Ababacus
Descrizione:
The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system. The exact origin of the abacus is still unknownAggiunto al nastro di tempo:
Data:
2 ore 52 min, 2 gen 232 anni a. C.
Adesso
~ 2257 years ago
