The relationship between the complement of negative numbers and the original code

Existing relationship: 1. The complement of a negative number is the inversion of all bits of the original code except the sign bit, and then the lowest bit is added by 1; 2. The complement of a positive number is the same as its original code; 3. Negative numbers The complement of can be obtained by using the positive original code 1.

There is the following relationship between the complement of a negative number and the original code:

1. The complement of a negative number is the division sign of its original code Invert all other bits, then add 1 to the lowest bit.
2. The complement of a positive number is the same as its original code.
3. The complement of a negative number can be obtained by using the original code of a positive number 1.

For example, find the complement of -5: The positive number corresponding to

1. -5 is 5.
2. Invert 5 bitwise to get 0101.
3. Add 1 to the end of 0101 to get 01011, which is the complement of -5.

Therefore, the relationship between the complement of a negative number and the original code is: the complement of a negative number is the inversion of all bits of the original code except the sign bit, and then adding 1 to the lowest bit.

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