A computer keyboard is an input device that allows users to enter text and commands into a computer. It consists of a set of keys, each representing a letter, number, or function. Keyboards can be connected to computers via cables or wirelessly, and they come in various layouts, such as QWERTY and AZERTY, depending on the language and region. Most keyboards also include special keys for functions like adjusting volume, controlling media playback, and accessing shortcuts. Some keyboards are designed for specific purposes, such as gaming or ergonomic use, providing features like customizable keys and improved comfort for extended typing sessions.