**Binary code** is the system of representing text or computer processor instructions by the use of the Binary number system's two-binary digits "0" and "1". A binary string of eight digits (bits),

for example, can represent any of 256 possible values and can

correspond to a variety of different symbols, letters or instructions.

In 8-bit ASCII code the uppercase A is represented by the bit string 01000001.

In computing and telecommunication, binary code is used for any of a variety of methods of encoding data, such as character strings, into bit strings. Those methods may be fixed-width or variable-width.

In a fixed-width binary code, each letter, digit, or other

character, is represented by a bit string of the same length; that bit

string, interpreted as a binary number, is usually displayed in code tables in octal, decimal or hexadecimal notation.

There are many character sets and many character encodings for them.

A bit string, interpreted as a binary number, can be translated into a decimal number.