2's complement
From sciforums_encyclopedia
a binary system that allows negative numbers in computers.
example
- to represent -2 in 2's complement you take the complement of 2 and add 1.
- thus 00000010=11111101, adding 1 gives 11111110.
- to represent -9, 00001001=11110110, adding 1 gives 11111000.
any carries from the MSB (most significant bit) are ignored.
