1, the appearance and use of the abacus in China has a long history, more than two thousand years ago. Abacus is the earliest from the "chip counting" to come, "chip counting" is the use of a bamboo stick as a chip to carry out calculations. "Chip counting" began to use the decimal system, which is relatively early in the world. At first, it was only used for addition and subtraction, and then simple multiplication and division were introduced. Later, due to the development of computation, "Chip counting" lagged behind because of its slow calculation speed. So, in the process of improving the "chip counting", the abacus was used and born.
2, the appearance of the abacus can be traced back to the Han Dynasty. The end of the Eastern Han Dynasty, the mathematician Xu Yue, "the Chronicle of Mathematics", "bead calculator control with four times, the warp and weft of the three talents." Han Dynasty that is an abacus, but the difference is that there is no beam in the middle of the abacus at that time, the upper and lower beads to color difference. And on a bead when five, under the beads when a bead, is the same as modern.