(1) [x]补 = 0101 0001b x =+101 0001b = +81d(2). h的ASCII码是104d(3). x =+43d [x]补 = 0010 1011b(4).x = -38d = -10 0110b [x]原 = 1010 0110b [x]反 = 1101 1001b [x]补 = 1101 1010b(5). 若-127D机器数是 1000 0000b, 是反码