Buttons are small, often circular, or square-shaped objects used to interact with a computer or electronic device. They can be pressed to perform an action, such as clicking a link on a web page or turning on a light switch. Buttons may also be used to control the volume of music, change the channel on a television, or activate certain features of an application. Some buttons can even be programmed to perform multiple tasks. Buttons come in various shapes and sizes and are typically made from plastic or metal materials.