That is, full ten into one, full twenty into two, and so on; According to the weight expansion, the first weight is 10 0, the second weight is 10 1 ... and so on, the nth bit is 10 (n- 1), and the value of this number is equal to the value of each bit * the corresponding weight value of this bit.
China's metric system has a long history. In the 6th century BC, a ruler of the Zhou Dynasty carved one tenth of an inch and one hundredth.
Wang Mang officially set the capacity standard of 100 double bronze, with one welcome = ten buckets, one bucket = ten liters and one liter = 10.
Extended data source:
Human arithmetic uses decimal system, which may be related to the fact that human beings have ten fingers. Aristotle said that the universal use of decimal system by human beings is only the result of an anatomical fact, that is, most people are born with 10 fingers.
In fact, in the writing numeration system independently developed in the ancient world, except that the cuneiform numerals of Babylonian civilization were in the 60-decimal system and the Mayan numerals were in the 20-decimal system, almost all of them were in the decimal system. However, these decimal notation systems are not bitwise.
History:
Chinese has always used decimal system, and there is no evidence of using other decimal systems.
Some scholars believe that the bone tube unearthed from the cave dwelling site in Zhoukoudian, Beijing, more than 10,000 years ago is represented by a point, where two points stand side by side to represent 2, three points stand side by side to represent 3, five points are arranged above two and below three to represent 5, and a rectangle may represent 10.
Professor Li Di, a famous mathematical historian in China and a member of the Institute of International History of Science, believes that the symbol of human bone tube in caves is "an idea of a decimal".
The Chinese History Museum in Beijing has an ivory ruler unearthed from the Yin Ruins in Anyang, which is 15.78 cm long and divided into ten inches, indicating that the decimal system in China Shang Dynasty has been used several times in length.
During the Spring and Autumn Period and the Warring States Period, strict decimal notation appeared, with null representing 0, and the decimal multiplication and division "99 tables" and "calculation tables" were also invented.
Baidu encyclopedia-decimal system