What is GUI explain?

A graphics-based operating system interface that uses icons, menus and a mouse (to click on the icon or pull down the menus) to manage interaction with the system . Developed by Xerox, the GUI was popularized by the Apple Macintosh in the 1980s.

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What is called interface?

1a : the place at which independent and often unrelated systems meet and act on or communicate with each other the man-machine interface. b : the means by which interaction or communication is achieved at an interface. 2 : a surface forming a common boundary of two bodies, spaces, or phases an oil-water interface.

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