What is abacus all about?

Question

What is abacus all about?

Answer 1

It is used to perform math calculations. Few people use them, or even know how. However, blind folks do use them as calculators.

Answer 2

It's an easy way to do maths.  Like an early calculator

Answer 3

An Abacus has several rows of sliding beads on a bar in rows above one another.

Each row has nine beads. When something like the number 12 is entered. The person slides 2 beads on the top row to one side and 1 bead on the next row to one side. The top row represents the first digit, the second row the 2nd digit, etc.

Mow another number is added and the beads for those numbers are moved. When all the beads in one row end up being moved, 1 bead from the next row is moved.

It is basic adding machine. Accurate as its user and very large numbers can be totaled.

Hope this is what you wanted.

Answer 4

Its a mechanical  calculator used by the Chinese. It has beads that corresponds to a number in tens and hundreds. It can multiply, divide, add and subtract. However the number of figures is limited.