### What is binary?

#### Binary is the numerical language used by computers in the form of 1s and 0s. All data needs to be converted into binary for a computer to be able to process it.

### Why dO comPuters use binary?

#### Computers use binary because their circuits can either be on or off so either a 1 or 0. Everything on a computer is made up of binary, all the photos, websites and apps are made from many 1s and 0s.

### CoNverting Denary into binary

#### For example, to work out the number 84 in binary, first you need to set up the columns of base 2 numbers.

#### 32 doesn't go into 20 so a 0 goes in that box

#### 16 can fit in 20 you you put a 1 in the box and take it away from 20, leaving 4.

#### 8 doesn't fit into 4 but 4 does so a 0 and 1 go in those boxes.

#### We're left with 0 so zeros go in the last two boxes.

#### And so you have the binary number for 84 : 1010100

Credits:

Created with images by Brett Jordan - "Binary"