# 1s Complement `number`

Discussion.

On this page we are going to discuss 1s complement in details with binary logic examples. Binary numbers can also be represented by ‘radix’ and ‘radix -

**In binary arithmetic,** 1s complement of a binary number N is obtained by the formula below:

`(2^n – 1) – N`

, Where **n** is the no of bits in **binary number N**.

**Example:** Convert binary number 111001101 to 1’s complement.

**Method:** By following the equation `above`

, we have N = 111001101, n = 9

Now 2^n = 256. In binary, 100000000

2^n -**TERM I**