Character, character code
EN: Character, character code
The word character is used differently in different contexts. In the context of modern computer operating systems, it is often defined as a code with a meaning attached to it. For example, the decimal character code 97 represents the letter a. In most operating systems today, character codes are represented by an 8-bit unit of data known as a byte. Also see character encoding, glyph, keyboard layout.
Adobe Glossary of typographic terms