Who Invented the Abacus

Abacus is the oldest calculating and counting device. Its origin dates back to 2700 – 2300BC in the Sumerian times. However, abacus as we know today was invented by Chinese during 2nd century BC. It is also referred to as counting device that has been used in Asia and Africa for arithmetical calculations. The development of abacus can be classified into three stages namely Ancient Age, Middle Age and the Modern Age. Prior to the […]