A mouse is a hardware device which allows the user to control a cursor to manipulate data without complicated commands. The mouse or mice was invented by Douglas Englebart in 1963, who at the time was working at the Stanford Research Institute, which was a think tank sponsored by Stanford University. The Mouse was originally referred to as an X-Y Position Indicator for a Display System. Xerox later applied the mouse to its revolutionary Alto computer system in 1973. However, because of Alto's unfortunate success, it was first widely used in the Apple Lisa computer. Today, the mouse is now found on every Apple and PC computer and used with various different GUIs.