Human Computer Inteface (HCI)

Human Computer Inteface (HCI)

1. Graphical User Interface

   • Low level of ICT skill required
   • People can be more meaning ful than words
   • Have large file sizes so require ots of storage
   • Can make the computer run slower
   • W-windows I-icons M-menus P-pointers

2. Menu Driven Interface

   • Navigation to find option is simple
   • User imput is validated as only the option shown can be used
   • Some options may have no use for a particular user
   • Can be difficult to locate an option if there is a high number of menus and sub menus

3. Command Line Interface

   • Instructions are executed quickly
   • Instructions are versetile. A large number of options can be picked per instruction
   • Small operating system
   • Users need to learn the codes
   • Need to type instructions precisely
   • High levels of ICT skills are needed

4. Touch Sensitive Interface

   • Low level ICT skill needed
   • Less possibility of theft
   • More practicality in some environments, e.g. restaurants
   • Can become dirty and scratched causing a blurred screen
   • Higher costs than a keyboard, mouse and standard monitor

5. Biometrics

   • Fingerprints
   • Voice patterns/recognition
   • Palm prints
   • Retina (eye) scanner
   • Facial features

6. Operating system

   • Loads and runs the programs
   • Maximises the use of memory
   • Handles inputs and outputs from devices
   • Security is maintained

7. Batch processing

   • Jobs are collected together and all done in one go

8. Real-time processing

9. Interactive processing

   • Continuous exchange of information between computer and user