Binary is a digital system widely used in computing technology. Binary data are numbers represented by 0 and 1. Its cardinal number is 2, the carry rule is "every two enters one" and the borrowing rule is "borrowing one as two".

Binary numbers are binary systems, and 0 and 1 are basic operators. The basis of computer operation is binary. Computers are based on binary. The decimal system commonly used in early design is mainly decimal (because we have ten fingers, decimal system is a reasonable choice, and fingers can represent ten numbers. The concept of 0 did not appear until a long time later, so it is 1- 10 instead of 0-9.

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