People throughout their day to day use language in order to communicate. Unlike us however, a computer cannot understand our languages, it is too complex for it to understand in this form. That is why computers use something known as the Binary Number system.
The system itself is very simple to understand. A 0 means the value is off and 1 means the value is on. You usually find it in a series of 8 bits with numbers being made under a base 2 system.
All instructions given to the computer are decoded to binary in order to give off commands to the computer. It can also be used to create your own messages and is used in Networking when creating a sub-net in order to identify the last port of your networks.
