Human computer interface

Human computer interface

1. GUI / WIMP

   • Advantages
     • easy to use for beginners
     • it is easy to explore and find your way around the system
     • you do not have to leanr complicated demands
     • they let you exchange data between different software applications
     • You get the benifit of WYSIWYG (what you see is what you get)
   • Disadvantages
     • They need significantly more memory to run than other interface types
     • they use more prosessor than other types of interface
     • takes up a larger amount of hard disk space than other interfaces

2. Command line interface

   • Adavantages
     • instructions execute quickly
     • insructions are versitile. Large number of options can be picker per instruction
     • small operating systems (less memory used)
   • Disavantages
     • need to learn the special instructions
     • need to type instructions precisely
     • complex levels with some commands. High level ICT skills needed

3. Menu interface

   • Advantages
     • extremely easy to use. someone who has never seen the interface before can work out what to do
     • there are no commands to learn or remember
     • step by step options are given so that so that the user doesnt have to remember anything
     • they dont needhuse amoutns or memory or processing power
   • Disadvantages
     • a poorly designed menu face may be slow to use
     • it can be irritaiting if there are to many manu screens to work through - users may be gert annoyed or bored if it takes to long
     • the menu can take up a large part of the screen so you have to keep flicking back and forwards between applications

4. speach and sound interface

   • advantages
     • the trainer does not need to be leared how to use it
     • more flexibility than dialogue interface
     • suitable for handicaped people
   • Disadvantages
     • not always reliable and cannot always pick up what you are saying correctly
     • not widley available as other forms interface are often superior

5. Touch sensitive interface

   • advanatages
     • low level ict skills needed
     • less possibility of theft
     • more pratically in some enviroments where a keyboard cannot be used i.e extreme cold and users has gloves on
   • Disadvantages
     • can become dirty and scratched which will mkae it difficult to read
     • higher cost than kouse, keyboard and noraml monitor

6. BIOMETRICS

   • finger prints
   • voice patterns / recogniton
   • eye scanner
   • facial features
   • palm prints