A keyboard is an input device consisting of a set of keys or buttons that allows a user to enter text, numbers, and commands into a computer or other electronic devices. Most commonly, keyboards follow the QWERTY layout, named after the first six letters on the top row of keys. In addition to alphabetic and numeric keys, keyboards include function keys, control keys (such as Ctrl, Alt, and Shift), navigation keys (such as arrow keys and Home/End), and special keys for specific tasks.

Keyboards can be connected to devices via wired (USB or PS/2) or wireless (Bluetooth or RF) methods. They come in various styles, including full-sized, compact, ergonomic, and mechanical, catering to different user preferences and needs. Beyond computers, keyboards are also found on devices like smartphones (as virtual keyboards), tablets, and point-of-sale terminals.