Abacus is a traditional calculation tool in China, which evolved from the calculation widely used as early as the Spring and Autumn Period. It is not only an important invention in ancient China, but also a widely used computing tool before Arabic numerals appeared.
China is the hometown of abacus. Today, computers have been widely used. The ancient abacus has not been abandoned, but it is still favored by many people because of its convenience and accuracy. Therefore, people often compare the invention of the abacus with four great inventions of ancient china, and think that the abacus is also a great contribution of the Chinese nation to mankind.
Extended data:
An abacus is a tool for calculating numbers. A beam is installed in a rectangular frame with more than ten sticks embedded in it. Each stick is wearing a string of beads, which is called an abacus. Usually there are two on the beam, each representing five, and five under the beam, each representing one.
You can do operations such as addition, subtraction, multiplication and division by moving the abacus in a prescribed way. With the discovery of new historical materials, some experts believe that abacus should have originated in the Tang Dynasty and was popular in the Song Dynasty.
It is based on the famous painting "The Riverside Scene at Qingming Festival" in the Song Dynasty. There is a drugstore with an abacus on the counter. After enlarging the picture, the abacus experts in China and Japan confirmed that the object in the painting is a renju abacus similar to the abacus used in modern times.
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