Two's Complement

Two’s Complement

Two’s complement is a mathematical operation way of storing integer using only ‘1’ and ‘0’. In order to differentiate between a positive and negative integer, all we have to do is take whatever binary number a integer is for that particular bit and just flip the ‘1’ to ‘0’ and vice versa then add one to that binary number. Therefore, a positive integer will always start with ‘0’ while a negative integer will always start with ‘1’

For example:

12 in 8bit is 00001100

So -12 will be 11110011

+ 1

=11110100

And to add two numbers just simply add the ‘1’ and ‘0’ while moving the 1 to the previous number.

Example:

5 =00000101

+

10 =00001010

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