User Interface comprises of everything the user can use to interact
with the computer. It is basically the means by which the user and computer system
can interact using input and output devices.
GUI and CUI
GUI and CUI are two types of User Interfaces. GUI stands for Graphical User
Interface while CUI stands for Character User Interface.
CUI:
CUI stands for Character User Interface. This is a type of user interface where
user interacts with computer using only keyboard. To perform any action a
command is required. CUI is precursor of GUI and was used in most old
computers. Most modern computers use GUI and not CUI. Eg: MS-DOS has CUI.
GUI:
GUI stands for Graphical User Interface. This is a type of user interface where
user interacts with the computer using graphics. Graphics include icons,
navigation bars, images etc. Mouse can be used while using this interface to
interact with the graphics. It is a very user-friendly interface and requires no
expertise. Eg: Windows has GUI.
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