1移码加减运算移码加减运算1 1 1 1、移码意义、移码意义在数轴上表示在数轴上表示-16-16-16-16 到到 1515151532323232 个数值。把原点位置左移到个数值。把原点位置左移到-16-16-16-16 处，数值的关系未变。处，数值的关系未变。 而且数值之间的大小关系非常直观，不需根据符号判断大小。而且数值之间的大小关系非常直观，不需根据符号判断大小。2 2 2 2、移码定义、移码定义-2-2-2-2 N N N N = = = = 0X0X0X0XXXX移移XXXX补补011110111101111011111111111111111111111101111011110111101111011100111001110011101111011110111101111001110011100111001110011010110101101011011110111101111011110101101011010110101101011000110001100011001110011100111001110001100011000110001100010110101101011010111101111011110111101101011010110101101011010100101001010010101101011010110101101001010010100101001010010010100101001010011100111001110011100101001010010100101001010000100001000010001100011000110001100001000010000100001000001110011100111001111011110111101111011100111001110011100111001100011000110001101011010110101101011000110001100011000110001010010100101001011010110101101011010100101001010010100101001000010000100001001010010100101001010000100001000010000100000110001100011000111001110011100111001100011000110001100011000100001000010000101001010010100101001000010000100001000010000010000100001000011000110001100011000100001000010000100001000000000000000000001000010000100001000000000000000000000000X0X0X0X0XXXX移移XXXX补补1111111111111111111111111111011101110111011111011011011011101110111011100110011001100110101101101101110111011101110101010101010101011001001001001100110011001100010001000100010001101101101110111011101110110011001100110011010010010010101010101010101000100010001000100010010010011001100110011001000100010001000100000000000010001000100010000000000000000000