abacus
Definition
A device consisting of beads or counters on wires used for performing arithmetic calculations
한국어 산술 계산을 위한 주판 장치
Example
"The ancient Egyptians used an abacus to calculate trade balances and taxes."
A device consisting of beads or counters on wires used for performing arithmetic calculations
한국어 산술 계산을 위한 주판 장치
"The ancient Egyptians used an abacus to calculate trade balances and taxes."