GRAPHICAL USER INTERFACE (GUI)

GRAPHICAL USER INTERFACE (GUI)

1. WHAT IS A GUI?

   • A GRAPHICAL USER INTERFACE IS A SYSTEM OF INTERACTIVE VISUAL COMPONENTS FOR COMPUTER SOFTWARE.
     • DISPLAYS OBJECTS THAT CONVEY INFORMATION, AND REPRESENT ACTIONS THAT CAN BE TAKEN BY THE USER.
       • GRAPHIC INTERFACE CALLED "THE SET OF GRAPHIC COMPONENTS". ALLOWS US INTERACTION.
   • HISTORY
     • IT WAS FIRST DEVELOPED AT XEROX PARC BY ALAN KAY, DOUGLAS ENGELBART IN 1981.
       • APPLE INTRODUCED THE LISA COMPUTER WITH A GUI ON JANUARY 19, 1983.

2. MAIN USE

   • TO CREATE AND PROVIDE A SIMPLE VISUAL ENVIRONMENT, IN ORDER TO ALLOW COMMUNICATION WITH THE OPERATIVE SYSTEM.

3. HOW DOES IT WORK?

   • USES WINDOWS, ICONS, AND MENUS TO CARRY OUT COMMANDS, SUCH AS OPENING, DELETING, AND MOVING FILES.
     • ITS OPERATING SYSTEM IS PRIMARILY NAVIGATED USING A MOUSE, A KEYBOARD (KEYBOARD SHORTCUTS OR THE ARROW KEYS).
   • REPRESENTATION
     • USES A SET OF IMAGES AND GRAPHIC OBJECTS TO REPRESENT THE INFORMATION AND ACTIONS AVAILABLE IN THE INTERFACE.
   • COMPONENTS
     • COMPONENTS ARE OBJECTS OF THE CLASSES THAT INHERIT FROM THE COMPONENT BASE CLASS AS BUTTON, LIST, TEXFIELD, TEXAREA, LABET, ETC.
       • GENERALLY A GUI IS MOUNTED ON A FRAME, IT WILL BE THE MAIN CONTAINER THAT WILL CONTAIN THE COMPONENTS OF THE GRAPHICAL INTERFACE, A CONTAINER CAN HAVE SEVERAL CONTAINERS
     • THE COMPONENTS ARE CONTAINED IN CONTAINERS

4. TYPES

   • COMMAND LINE INTERFACE
   • NATURAL USER INTERFACE
   • TOUCH USER INTERFACE

5. BENEFITS

   • GENERAL
   • FOR COMPANIES

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