x1=-67 .x2=1ah求原码,反码,补码,移码
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x1 = -67d = -100 0011b
[x1]原 =1100 0011b
[x1]反 =1011 1100b
[x1]补 =1011 1101b
[x1]移 =0011 1101b
x2 =1ah =+1 1010b
[x2]原=[x2]反=[x2]补 =0001 1010b
[x2]移 =1001 1010b
