2 St. 52 Min, 2 Jan 232 Jahr v. Chr. - Ababacus
Beschreibung:
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 unknown
Zugefügt zum Band der Zeit:
history of computer
Datum:
Abbildungen:
![]()
