Binary code

For example, computers using western languages often use 8-bit binary codes for characters. The ISO 8859-1 character code uses 8 bits for one letter e.g. "R" is "01010010" and "b" is "01100010"; the block of 8 bits is called a byte. The ASCII code uses 7 bits to represent 128 characters (0–127).

A binary code can also refer to a linear code over the finite field F2 = Z/2Z.

ASCII and binary characters