### If you are unsure what binary is then check this out.

### http://en.wikipedia.org/wiki/Binary_numeral_system

# Binary numeral system

From Wikipedia, the free encyclopedia

The **binary numeral system**, or **base-2 number system**, represents numeric values using two symbols, 0 and 1. More specifically, the usual base–2 system is a positional notation with a radix of 2. Owing to its straightforward implementation in digital electronic circuitry using logic gates, the binary system is used internally by all modern computers.