Mutual conversion between binary original code, complement code, complement code and frame code

The highest bit of the binary system is the sign bit, 0 is a positive number and 1 is a negative number. The original code, inverse code and complement code of a positive number are the same. The one’s complement of a negative number = the original code is inverted except for the highest bit (sign bit). The complement of a negative number = one's complement + 1. Frameshift = Negating the highest bit (sign bit) of the two's complement number. -0 Original code: 1000 0000 -0 inverse code: 1111 1111 -0's complement: 0000 0000 -0 framecode: 1000 0000 +0 Original code: 0000 0000 +0 inverse code: 0000 0000 (positive inverse code is the same as the original code) +0's complement: 0000 0000 (positive number's complement is the same as the original code) +0 framecode: 1000 0000 -1 Original code: 1000 0001 -1 inverse code: 1111 1110 -1's complement: 1111 1111 -1 framecode: 0111 1111 +1Original code:0000 0001 +1 inverse code: 0000 0001 (positive number inverse code is the same as the original code) +1's complement: 0000 0001 (positive number's complement is the same as the original code) +1 framecode: 1000 0001

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