Function keys are special keys on a computer keyboard, typically labeled F1 through F12. They are located at the top of the keyboard and serve various purposes depending on the software being used. For example, pressing F1 often opens the help menu in many applications, while F5 is commonly used to refresh a webpage in web browsers. These keys can also be customized to perform specific tasks in different programs. In some cases, they may be combined with the Shift, Ctrl, or Alt keys to access additional functions. Overall, function keys enhance productivity by providing quick access to frequently used commands.