GRAPHICAL USER INTERFACE

 

 

 

 Q) WHAT IS GUI ?

ANS) GRAPHICS USER INTERFACE (GUI) 

 1)     GUI ARE SYSTEMS THAT ALLOW CREATION AND MANIPULATION OF USER INTERFACE .

 2) GUI ARE A PROGRAM INTERFACE  THAT TAKE ADVANTAGE OF THE COMPUTER'S  GRAPHICS TO TAKE THE PROGRAM EASIER TO USE .

3) EXAMPLE OF GRAPHICS USER INTERFACE  ARE FOR DESKTOP :- 

    Microsoft Window 

    Mac OS 

   Ubuntu unity 

  GENOME Shell 

  FOR ANDROID 

    Apple's 

    iOS 

   BlackBerry Os .

 

 

   

Q) WHAT IS POINTER ? 

 ANS )  A SYMBOL THAT IS APPEAR ONE THE  DISPLAY SCREEN  AND THAT YOU MOVE TO SELECT OBJECT AND COMMANDS . 

 

        

POINTER DEVICE  :- MOUSE AND TRACKBALL .

Q) WHAT IS ICONS ?

  ANS)   SMALL PICTURE THAT REPRESENT COMMANDS , FILE OR WINDOWS .

                                          

                                              

                                        

                                      THESE ALL ARE COMPUTER FOLDER ICONS

 

                                                  

 

Q) WHAT IS DESKTOP ?
  

ANS) THE AREA ON THE DISPLAY SCREEN .

 

Q) WHEN A SCREEN IS SPLIT INTO SEVERAL INDEPENDENT REGION , EACH ONE IS CALLED WINDOW .

IN EACH WINDOW YOU CAN RUN A DIFFERENT PROGRAM . IN EACH WINDOW YOU DISPLAY A DIFFERENT FILE TOO .

 

Q) WHAT IS DIALOG BOX ?

 

ANS)  DIALOG BOX ARE USED TO COLLECT INFORMATION FROM THE USER TO PRESENT THEIR INFORMATION TO USER .

A DIALOG BOX USUALLY CONTAIN ONE OR MORE CONTROL BOX TO PROMPT THE USER FOR ADDITIONAL INFORMATION .

WINDOW ALSO PROVIDE A PREDEFINED DIALOG BOX . 

                  

                                          

                                                ADD AND REMOVE DIALOG BOX

                         

               

                                                       OPEN FILE DIALOG BOX 

 

Q) WHAT IS NeXT SOFTWARE ?

 

ANS)  THE NeXT COMPUTER , THREE DIMENSIONAL USER INTERFACE .

    FIRST INTRODUCED BY "STEVE JOBS"  IN 1988. 

   NeXT FIRST INTENDED FOR EDUCATIONAL MARKET .

  THE NeXT USER INTERFACE IS COMPOSED OF FOUR COMPONENTS .

 

           1) WORKSPACE MANAGER :- 

             MANAGE FILE AND DIRECTORY .

  

              2) INTERFACE BUILDER :- 

              ITS HELP USER TO CREATE INTERFACE ON THE SCREEN WITHOUT WRITING      A               SINGLE LINE CODE .

 

                3) APPLICATION KIT :- 

                  A LIBRARY OF USER INTERFACE OBJECT . 

 

            4) WINDOW SERVER :-

            MANAGE ALL SCREEN ACTIVITIES .