FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The abacus, called Suan-Pan in Chinese, as it appears today, was first chronicled circa 1200 C.E. in China. The device was made of wood with metal re-inforcements. On each rod, the classic Chinese abacus has 2 beads on the upper deck and 5 on the lower deck; such an abacus is also referred to as a 2/5 abacus.

Detailed explanation-2: -The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe, China, and Russia, millennia before the adoption of the Hindu-Arabic numeral system.

Detailed explanation-3: -ABACUS (3003 BC) Upper Beads • The abacus was invented in 3000 BC in Babylonia. Deck Beam • It consists of beads on rods to count and calculate. Rods Lower • It is still widely used in Asia.

Detailed explanation-4: -After the development of the abacus, no further advances were made until John Napier devised his numbering rods, or Napier’s Bones, in 1617.

Detailed explanation-5: -The earliest known calculating device is probably the abacus. It dates back at least to 1100 bce and is still in use today, particularly in Asia. Now, as then, it typically consists of a rectangular frame with thin parallel rods strung with beads.