A base 2 counting system used in computers consisting of only l's and O's.

A number system employed in computers and digital systems, in which successive digits are coefficients of powers of the base 2, rather than the base 10. For example, the decimal number 13 is represented by the binary number 1101 (1 x 23 + 1 x 22 + 0 x 21 + 1 x 20). Since the only values in the binary system are "0" and "1," quantities, or BITS (binary digits) are represented electronically with either of two conditions, typically a high voltage representing a "1" and a low voltage representing a "0". See bit.

A number system based upon only two numbers, 0 and 1.

Base two number system as opposed to the decimal (base 10) system which is the standard system. For example, 5 in base 10 is 101 in binary (1 four, no twos, and 1 one).

A counting system used in computers consisting only of 1's and 0's.

A numbering system used in computers consisting of only 1's and 0's.