HCI (Human Computer Interface)

HCI (Human Computer Interface)

1. advantages of graphical user interface (GUI)

   • low level of ict skills needed
     • pictures are more meaningful than words (help younger people or aduiance)

2. disadvantage of graphical user interface (GUI)

   • can be large or complex and therefore take up resources
     • can make the computer run slower

3. menu driven interface

   • advantage
     • navigation to find option is simple
       • user input is validated as only the options shown can be used
   • diadvantage
     • some options may have no use for a particular user

4. command line inerface

   • advantage
     • instructions execute quickly
       • small operating systems (less memory used)
   • disadvantage
     • need to learn the special instructions
       • need to type instructions precisely

5. touch screen interface

   • advantage
     • low level ict skill needed
       • less posibility of theft
   • disadvantage
     • higher cost than mouse, keyboard and normal monitor
       • can become dirty annd scratched

6. biometric

   • fingure prints
     • voice pattern
       • retina (eye) scanner
         • facial features
           • palm prints

7. an operating system is a program that controls the running of computers

   • it loads and runs programs
     • it maximises the use of memory (ram)
       • it maintains the security of the systems

8. multi programming