Binary number - Simple English Wikipedia, the free.

Science and technology Mathematics the binary numeral system is a way to write numbers using only two digits: 0 and 1. Binary number, a representation of numbers using only two digits (0 and 1) Binary relation, a relation involving two these are used in computers as a series of off and on switches. In mathematics and digital electronics, a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two The binary numeral system is a way to write numbers using only two digits: 0 and 1