Is the ancient unit of counting decimal?

The prepayment rate is 10, provided that the counting unit is decimal.

In addition to the common 10 system, there are binary systems commonly used in computer science, which are binary1; Octal, each octal1;

16, every 16 1.

There are many others whose prepayment rate is not 10:

Like time,

1 hour =60 minutes, 1 minute =60 seconds;

1 year = 12 months

Ancient China

1 day = 12 hours,

There are 24 solar terms in a year and so on.

Coin, weight:

Ancient China

1 gold = 16 beam

1 permeability = 1000 yuan

Also, such as Chinese and foreign units of length and area:

Britain and the United States

1 ft = 12 inch;

Ancient China

Three hundred steps a mile, six feet.

Hanshu Food History says: "The way to govern the people is based on the land. Therefore, it is necessary to build a step and set up an acre of land. This is just the boundary. Six feet is a step, a hundred steps is an acre, an acre is a husband, a husband is a house, a house is a liter, and a well is a mile, which is nine husbands. " As can be seen from this record, this well is a mile long and 900 mu of cultivated land cultivated by Jiufu, with 300 steps on each side. One step is six feet, so 300 steps a mile is 1800 feet. What needs to be explained here is that according to the volume of Continued Literature 108 Le 8, "Zhou takes eight feet as a step" and "Qin takes six feet as a step", and it is pointed out that the two are equal. Therefore, History of Eating Goods in Hanshu replaces Zhou's step system with Qin's step system here. Because the length of rulers in Qin and Han Dynasties, such as Shang Yang ruler, Xin Mang copper ruler and Jianwu copper ruler in the later Han Dynasty, one foot is equal to 0.23 1 meter. ② From this, it can be calculated that one mile is equal to 1800 feet and 4 15.8 meters. One mile in the city today is 500 meters. It is known that Yili in Zhou Dynasty is 83. 16% of today's city. Because the system of 300 steps in Zhou Dynasty has not changed since Qin and Han Dynasties, it can be regarded as the system of Zhou, Qin and Han Dynasties.