Definition of abacus:
(n) :
a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves; a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
Definition of abacus:
(n) :
a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves; a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave