A defined area of the screen, usually designed to look like a pushbutton, which, when clicked with a mouse, performs a given action often represented by an icon on the button face.
A computer is a machine capable of executing instructions to perform operations on data. Its distinguishing feature is its ability to store its own instructions, allowing it to perform numerous operations without needing new instructions each time. Modern computers are composed of high-speed electronic components capable of executing millions of operations per second.
