Binary close binaryA number system that contains two symbols, 0 and 1. Also known as base 2. addition is very like decimal addition, except that it carries on a value of 2 instead of a value of 10. In ...

Note that binary numbers are usually written in blocks of four, separated by a space (eg 0111 1011). In denary, numbers are often written in blocks of three (eg 6 428 721). A quick way to check ...