The two's complement of a binary number is defined as the value obtained by subtracting the number from a large POWER of two (specifically, from 2N for an N-bit two's complement). The two's complement of the number then behaves like the negative of the original number in most ARITHMETIC, and it can coexist with positive numbers in a natural way.

A two's-complement system or two's-complement arithmetic is a system in which negative numbers are represented by the two's complement of the absolute value; this system is the most common method of representing signed INTEGERS on computers. In such a system, a number is negated (converted from positive to negative or vice versa) by computing its two's complement. An N-bit two's-complement NUMERAL system can represent every integer in the range −2N−1 to +2N−1−1.

The two's complement of a binary number is defined as the value obtained by subtracting the number from a large power of two (specifically, from 2N for an N-bit two's complement). The two's complement of the number then behaves like the negative of the original number in most arithmetic, and it can coexist with positive numbers in a natural way.

A two's-complement system or two's-complement arithmetic is a system in which negative numbers are represented by the two's complement of the absolute value; this system is the most common method of representing signed integers on computers. In such a system, a number is negated (converted from positive to negative or vice versa) by computing its two's complement. An N-bit two's-complement numeral system can represent every integer in the range −2N−1 to +2N−1−1.