User Interface (UI) :
The aspects of a computer system or program which can be seen (or heard or otherwise
perceived) by the human user, and the commands and mechanisms the user uses to control its
operation and input data. A graphical user interface emphasises the use of pictures for output
and a pointing device such as a mouse for input and control whereas a command line interface
requires the user to type textual commands and input at a keyboard and produces a single
stream of text as output.
The aspects of a computer system or program which can be seen (or heard or otherwise
perceived) by the human user, and the commands and mechanisms the user uses to control its
operation and input data. A graphical user interface emphasises the use of pictures for output
and a pointing device such as a mouse for input and control whereas a command line interface
requires the user to type textual commands and input at a keyboard and produces a single
stream of text as output.
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