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Explanation about Graphical user interface. (For 12th HSC student)

 What is GUI ?

• The interface which replace cryptic command by their graphical representation are called as graphical user interface.

• Ex. Windows operating system is GUI based operating system.

• ADVANTAGES :

• It is not necessary to remember the commands and is meaning .

• User can run several programs simultaneously.

• User can communicate and exchange data between program without transferring and copying the data .

• Easy to use.

Features of GUI

• Replacement of command with icon :;

• Command are group together in various levels of hierarchy and when the user select a group , further commands in that group are displayed .

• This allow user to select command using cursor and simply clicking on it .

• User can select the command and use the application without first having to know about the computer and it working .

• provide online help :

• It provide HELP about various features of the application .

• Help can assists the user in knowing everything about the application.

Essential components :

• Menu bar : appear at the top.

• Scroll bar : allow user to scroll the window.

• Dialogue boxes : used to display information or to get input ,

1) Modeless dialogue box. Continue without response

2)Modal dialogue box. Continue with response < br>

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