二进制数10110000,若看成纯小数,且为补码,则其对应真值的十进制数是

[x]补 =1011 0000b [x]反 =1010 1111b [x]原 =1101 0000b x = - 0.101 0000b = - (1/2 + 1/8)d = - 0.625d