What is the decimal equivalent of the following sequence of bits, which represents an unsigned binary integer: 1101001. What is the decimal equivalent if the sequence in bits encodes a two’s complement binary integer.
1101001
Unsigned binary number means every bit represents a power of two. The sum of the powers present in the binary representation gives the number in decimal.
We start from right to left: 120+021+022+123+024+125+1*26= 105
two’s complement binary integer = signed binary integer, in which the leftmost power is multiplied by (-1).
We start from right to left: 120+021+022+123+024+125+(-1)126=- 23
