**What are the different number systems?**

We are all familiar with the decimal system. However, when working with computers, we need to start with the binary system. The reason for this is that computers use gates (or switches) which only have two states, on and off. This is what translates to the 1's and 0's of binary. From there, it is possible to build up to other more useful systems such as the decimal system or the hexadecimal system.

This module contains worked examples of how to convert between the decimal, hexadecimal and binary.