How to convert Binary to Denary in bullet points -

- write out your binary place values, these should look like this:

128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |

Next you'll be given a binary number to convert into Denary. For example let's convert the binary number 0100101. In order to convert this we'd first have to place each digit under each binary place value, it should look like this -

128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |

0.

0 | 1 | 0 | 0 | 1 | 0 | 1

This means that (going to the right) it would be 0 = 128 1 = 64 0 = 32 0 = 16 1 = 8 1 = 0

Then you add the ones, so it's 64+8+1 = 73 so the Denary number is 73

Binary is written in 1s and 0s and is the language of the computer

What is binary?

Binary describes a numbering scheme in which there are only two possible values for each digit, these are 1s and 0s.

Why do computers use binary?

Computers use binary because they have circuits which are either on or off. This gives them two states to work from to make calculations and run processes. It is much easier for a computer to use this 2 digit base system.