Question

what does abacus consist of ?​

Answer 1

Answer:

An abacus consists of a wooden frame, rods, and beads. Each rod represents a different place value—ones, tens, hundreds, thousands, and so on. Each bead represents a number, usually 1 or 5, and can be moved along the rods. Addition and subtraction can easily be performed by moving beads along the wires of the abacus.

Answer 2

There are two divisions in an abacus. The horizontal bar that divides the upper and lower part is called the beam. The beads that are in the lower part are called the lower beads or the earth beads. The beads that are in the upper part are called the upper beads or the heaven beads.