Yes.
GUI (pronounced "gooey") = Graphical User Interface
Mac OS has a graphical user interface (GUI).
GUI Graphical user interface. There are two different GUI's--Basic or Aero.
The Graphical User Interface (GUI) was developed by Xerox at their Palo Alto Research Center (PARC). They used the GUI concepts in their Xerox 8010 Star Information System in 1981.The idea was developed further by Apple and used in their Lisa in 1983, then the Macintosh in 1984.So technically the Mac OS was not the first GUI but it was the first to be widely adopted by consumers.
not realy as G.U.I is an OS used by windows
It was Xerox in 1970s with the Xerox Alto. The Alto actually had a GUI. Until Apple had created the Macintosh, there really was no GUI. In 1985, Microsoft created a crude GUI, Windows 1, which was only just an enhanced DOS Shell.
Desktop
Yes
Aqua.
No, GUI stands for Graphic User Interface. It contains graphic contents and you can use all features of OS using that interface only. However you always have a terminal, and you can do things by commandline if you wish.
Visual basic is not a GUI operating system. In fact it is not even an OS. It is just a platform to develop GUI software for windows using BASIC-like programming syntax.