The earliest arithmetic artifact in history is the arithmetic that originated in China. It is impossible to investigate when this calculation was invented. But at the latest in the Spring and Autumn Period and the Warring States Period, the use of calculation and compilation has become very common.

The calculation is generally 13? 14cm, 0.2cm in diameter? 0.3 cm. Most of them are made of bamboo, and a few are made of wood, animal bones and metal.

In the process of use, there are two ways to express the number of units: vertical row and horizontal row, so as to count and calculate. Don't underestimate these small calculations. Their appearance has promoted the development of arithmetic in China and even the world.