Two's Complement Representation

External

• https://www.cs.cornell.edu/~tomf/notes/cps104/twoscomp.html

Internal

• Numeric Values Representation in Java

Overview

Two's complement is the most common signed integer representation scheme on computers. The scheme widely used because a computer can use the same circuitry to perform addition, subtraction and multiplication, whereas otherwise they would have to be treated as separate operations. Also, two's complement has no representation for negative zero, and thus does it not suffer from associated difficulties.

used by most computers to represent signed integral values such as byte, int or long. 

Positive numbers

Negative numbers

The primary motivation between this scheme is that