HUMAN COMPUTER INTERFACES

HUMAN COMPUTER INTERFACES

1. Command Line :

   • DISADVANTAGE : The commands need to be correct.
     • ADVANTAGE : They don't need the processing power of the latest computer to run.
       • ADVANTAGE : They don't need much memory.
         • ADVANTAGE : It's very quick for experienced users.
           • DISADVANTAGE : Commands have to be learnt, so inexperienced users will struggle.
     • ADVANTAGE : They can run on many programs.

2. Menu Driven Interfaces

   • Menu Bar:
     • ADVANTAGE : They are easy to use - the user doesn't have to remember commands.
     • ADVANTAGE : They are user friendly - you can often guess your way around the options.
     • DISADVANTAGE : They can be irritating if there are too many levels of menus to move around.
   • Full Screen Menu
     • A Full Screen Menu takes up the entire screen.
   • Simple Menu
     • The user is offered a simple menu from which to choose an option. One menu often leads to a further menu. Part of the screen may have an instruction followed by a numbered list of options to choose from.

3. Graphical User Interfaces ( GUI )

   • ADVANTAGE : They are easier for beginners to use.
   • ADVANTAGE : They allow you to exchange information easily between software.
   • DISADVANTAGE : They use a lot of memory and processing power.
   • DISADVANTAGE : They can be irritating for experienced users when simple tasks require a number of operations.