Positive zero: 00000000 Negative zero: 10000000 These two numbers are both 0, but their source codes have different representations. But their complement is the same, they are both 00000000 The highest bit of binary 10000000 is 1, so it represents a negative number.How much is negative?We invert all eight digits to get 01111111, and then add 1 to get 10000000The number is regarded as an unsigned number, with the value of 128, so 10000000 in the computer represents - 128
