A computer keyboard is a device used to input 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 Enter, Shift, and Control, which help users perform tasks more efficiently. Some keyboards are designed for specific purposes, such as gaming or ergonomic use, providing additional features like backlighting or a more comfortable shape.