Computer Science for IGCSE & O level - Data Representation (Section 7 - No. 37)
Which is a characteristic of a two's complement binary number representation?
It always represents positive numbers.
It uses only one bit to represent the sign.
Addition and subtraction can be performed directly.
It is not suitable for representing negative numbers.
Explication
Two's complement allows arithmetic operations on both positive and negative numbers using the same addition and subtraction algorithms.