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

Answered by Alexandru P. Computing tutor

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