COMPUTER FUNDAMENTALS

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.

Detailed explanation-2: -The invention of the Abacus occurred in Sumeria around 2700 to 2300 B.C.E. using a base 60 system, but the oldest known abacus example is the Salamis Tablet in Greece in 300 B.C.E. Variations of the Abacus include: Japanese soroban.

Detailed explanation-3: -It is presumed that theearliest abacus was invented about 5000 years ago. Some historians believe that the abacus was invented by the ancient Chinese while some believe that it was invented bythe Babylonians or the Egyptians.