What the Chinese used to calculate more than 2,000 years ago

What the Chinese used to calculate more than 2,000 years ago: the counting chip and the abacus.

1. The invention of the abacus came about gradually in the historical development of these methods of counting. When it first appeared is not traceable, but by the late Spring and Autumn period and the Warring States period; the use of counting chips has been very common.

According to the records of historical books and the discovery of archaeological materials, the ancient counting chips were actually a small stick of the same length and thickness, generally 13 - 14 centimeters in length and 0.2 to 0.3 centimeters in diameter, and when they were needed to keep track of the numbers and calculations, they were taken out, and placed on the table, on the kang, or on the floor to be fiddled with.

In the counting chip counting method:

To indicate the number of units by two ways of arranging vertically and horizontally, in which 1-5 are arranged vertically and horizontally to indicate the corresponding number of counting chips, and six to nine to indicate the above counting chips plus the corresponding counting chips below.

2, abacus, also known as the San disk, beads abacus is a simple calculation tool created and invented by our ancestors, beads abacus originated in the Northern Song Dynasty, the Northern Song Dynasty string file beads. Abacus is a simple calculation tool invented by the ancient Chinese working people. China is the hometown of the abacus, in the computer has been widely used today, the old abacus not only has not been abandoned, but because of its convenience, accuracy and other advantages, in many countries in the ascendant.

The Chinese invented the abacus in 550 B.C. for calculations, and it has been a widely used tool for commercial calculations since ancient times, and then spread around the world, only to be gradually replaced by modern Arabic numerals in the 12th century. By the 20th century many people in the former Soviet Union and the Far East were still using the abacus, with raw plastic abacuses replacing wooden and bamboo ones.

Which dynasty invented the abacus

The abacus is a traditional Chinese calculation tool, which evolved from the common use of calculators as early as the Spring and Autumn Period, and was not only an important invention in ancient China, but also a widely used calculation tool before the emergence of Arabic numerals.

China is the home of the abacus, and today, when computers are in common use, the ancient abacus is not only not abandoned, but is still favored by many for its convenience and accuracy.