Original code anti-code complement

The original code: the number of binary, such as: 10 original code 0000 1010

Anti-code: Positive number is the same as the original code, such as: 10 anti-code 0000 1010

Negative number is the original code 0 change to 0, (sign bit unchanged) such as:-10 original code 1000 1010

Anti-code 1111 0101

Complement: Positive complement is the same as the original code, such as: 10 complement 0000 1010

Negative number of the anti-code for the complement plus 1, such as:-10 anti-code: 1111 0101

Complement: 1111 0110

The numbers in the computer are stored in the complement, because the original code and the inverse code calculation is inaccurate, and the complement is accurate.

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Original code anti-code complement