The main reason why abacus mental arithmetic is banned is that this technology is too professional and unique to be standardized, which makes the mental and physical pressure of abacus mental arithmetic operators too great and difficult to develop continuously. In addition, the difficulty, low efficiency, low accuracy and high error rate of abacus writing are also the main reasons why it has not been promoted and supported by the government. At the same time, this very personalized skill is also difficult to popularize in the school education system, and it cannot achieve the effect of strong government support.
However, with the continuous development and progress of modern computing technology, the limitations of abacus calculation are becoming more and more obvious. Compared with modern computers, the abacus technology is far from the speed, and it is incompetent for some complex computing tasks. People now use computers, smart phones and other devices to complete similar computing tasks. This technology is more efficient and accurate. Therefore, the government did not continue to promote this technology.
The principle of abacus mental arithmetic:
Abacus mental arithmetic is inseparable from mathematics. Abacus mental arithmetic is a unique computing system based on mathematical principles, using abacus as a tool and using abacus to represent numbers. Numbers and beads are symbols. Abacus mental arithmetic has only three symbols, namely 1, 5, 0; Mathematics has 10 symbols, namely 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. In mental arithmetic, symbols are input and symbols are output.
Both abacus mental arithmetic and mathematics adopt decimal calculation method, and abacus mental arithmetic only adds a "five-liter system" that plays a regulating role. The operation is based on addition and subtraction within 20, multiplication and division in the table, and some laws and properties in the four operations are applicable. The abacus mental arithmetic process is completed by the comprehensive application of logical thinking, image thinking and inspiration thinking.