Graphical User Intertace, GUl Generally implemented as a desktop metaphor, with file folders, trash cans, and resource icons. Icons represent some item on the system, and respond accordingly when the icon is activated First developed in the early 1970 s at Xerox parc research facility Mac has traditionally provided oNlY the gUl interface. With the advent of osX based partially on UNiX ) a command line interface has also become available Because mice and keyboards are impractical for small mobile devices, these normally use a touch-screen interface today, that responds to various patterns of swipes or " gestures- Graphical User Interface, GUI • Generally implemented as a desktop metaphor, with file folders, trash cans, and resource icons. Icons represent some item on the system, and respond accordingly when the icon is activated. • First developed in the early 1970's at Xerox PARC research facility. • Mac has traditionally provided ONLY the GUI interface. With the advent of OSX ( based partially on UNIX ), a command line interface has also become available. • Because mice and keyboards are impractical for small mobile devices, these normally use a touch- screen interface today, that responds to various patterns of swipes or "gestures