COMPUTER FUNDAMENTALS

Detailed explanation-1: -An abacus is an ancient tool used for counting, consisting of a framed set with rods on which balls or beads are moved. The abacus has been in existence in China since the second century BCE, although the oldest counting boards have been found in fourth century BCE Rome.

Detailed explanation-2: -Merchants who traded goods needed a way to keep count (inventory) of the goods they bought and sold. Various portable counting devices were invented to keep tallies. The abacus is one of many counting devices invented to help count large numbers.

Detailed explanation-3: -The Chinese abacus, also known as the suanpan (/, lit. “calculating tray"), comes in various lengths and widths, depending on the operator. It usually has more than seven rods. There are two beads on each rod in the upper deck and five beads each in the bottom one.