What is the main reason why computers use binary?

1, which is easy to realize in the circuit: when the computer is working, the circuit is powered on, so each output terminal has a voltage. The voltage level is converted into binary by analog-to-digital conversion: the high level is represented by 1 and the low level is represented by 0.

2. It is convenient for addition, subtraction and counting coding. Easy to convert, binary numbers and decimal numbers are easy to convert each other. ?

3. It is convenient for logical judgment (yes or no). Suitable for logical operation: logical algebra is the theoretical basis of logical operation, and the binary system has only two digits, which coincides with the "true" and "false" in logical algebra. Two binary numbers just correspond to the words "true", "false" or "yes" and "no" in logical fate. ?

Extended data:

superiority

The digital device is simple and reliable with few components.

There are only two numbers, 0 and 1, so each number can be represented by any element with two different stable states.

The basic operating rules are simple and easy to operate.

disadvantaged

When a number is expressed in binary, there are many digits. Therefore, in practical use, the decimal system is used first, then sent to the digital system, and then converted into binary numbers after being sent to the machine, so that the digital system can operate, and then the binary is converted into decimal for people to read after the operation.

Baidu Encyclopedia-Binary