In fact, it represents a certain multiple of the level "unit" corresponding to this position, such as 6, which means 6× 1 for one digit, 6× 10 for ten digits and 6× 100 for hundreds. More strictly speaking, after the radix B of the carry system is selected, the writing (number) of the number B of 0, 1 2, ..., b- 1 are all given, so any natural number n can be represented by a polynomial of b, and these numbers can be used as coefficients (can be repeated).
Bit value symbol
Bitwise notation refers to the method of counting by bit system, that is, the size of a number is represented by a series of continuous numbers, and the size represented by each number depends on its own numerical value; It depends on its location.
Roman numerals are non-value notation, while the usual carry notation is bit notation. The earliest people with the concept of value system were the ancient Babylonians around 2000 BC, but they used sexagesimal. In the world, China first used decimal notation in Shang Dynasty (about 16 and 17 century BC to about 1045 century BC).
During the Warring States Period (4th century BC) or earlier, a perfect decimal notation system with spaces (zeros) as the unit was formed (but it was not widely used until10th century). Decimalization was really widely used in India at the end of the 6th century. After the 9th century, the decimal and numerical symbols they used-Arabic numerals-gradually spread to Arab and European countries.