Binary equivalent of 119 in 8 bit is (0111 0111)2
To find the 2’s complement of -119. First find the 1’s complement and Odd 1 to it.
b) If a computer uses 8 bit word length, 1 ’s complement method can represent numbers from – 127 to + 127. That means only 127 + 128 = 255 numbers can represent. But 2’s complement method can represent numbers from – 128 to + 127. That means we can represent a total of 256 numbers. We can represent one number more in 2’s complement representation.
