ICT

ICT

1. Operating systems

   • GUI
     • A graphical user interface is a method of interacting with a computer that uses graphical images and widgets in addition to text.
   • CLI
     • A command line interface or CLI is a method of interacting with a computer by giving it lines of textual commands (that is, a sequence of characters) either from keyboard input or from a script.
       • Advantages
         • If the user knows the correct commands then this type of interface can be much faster than any other type of interface.
         • This type of interface needs much less memory (Random Access Memory) in order to use compared to other types of user interfaces.
         • A low resolution, cheaper monitor can be used with this type of interface.
       • Disadvantages
         • For someone who has never used a CLI, it can be very confusing.
         • Commands have to be typed precisely. If there is a spelling mistake then the command will not respond or fail.