Question

Name the three ways in which signed integers can be presented in digital computers and explain the differences.

Answer 1

Three Ways are:-

1. signed magnitude representation
2. one's complement
3. two's complement

Signed Magnitude representation

The left most bit is 0 for positive numbers and 1 for negative numbers. The other bits represent the magnitude.

1's Complement

In this representation also left most bit is 0 for positive numbers and 1 for negative numbers. The other bits are complemented for negative numbers.

2's complement

The reprensentation is almost same as one complement but for negative numbers we add 1.