HCI's - [Human-Computer Interface]

HCI's - [Human-Computer Interface]

1. GUI - Graphical User Interface:

   • Advantages:
     • Low - Level of ICT skills needed; easy-to-use
     • Pictures can be more meaningful than words - (Help younger audience or people with disabilities)
   • Disadvantages:
     • Can be large and complex and therefore take up resources.
     • Can make the computer run slower.

2. Menu-driven interface:

   • Disadvantages:
     • Same options may have no use for a particular user.
     • Can be difficult to locate an option if there are high number of menus and sub-menus
   • Advantages:
     • Navigation to find option is simple.
     • User input is validated as only the options shown can be used.

3. Command-line interface:

   • Advantages:
     • Instructions execute quickly
     • Instructions are versatile. Large number of options can be picked per instruction.
     • Small operating system [less memory used]
   • Disadvantages:
     • Need to learn the special instructions.
     • Need to type instruction precisely.
     • Complex levels with some commands. High level ICT skills needed.

4. Touch-sensitive interface:

   • Advantages:
     • Low-level ICT skills needed.
     • Less possibility of theft.
     • More practicality in some environments where a keyboard cannot be used i.e. extreme cold and user has gloves on.
   • Disadvantages:
     • Can become dirty and scratched, which will make it difficult to read.
     • Higher cost than mouse, keyboard and normal monitor.

5. Biometrics:

   • Fingerprints
   • Voice patterns / recognition
   • Retina [eye] scanner
   • Facial features
   • Palm prints.