Human - Computer Interface

Human - Computer Interface

1. GUI (WIMP)

   • Advantages
     • Easy to use for a beginner
     • Its easy to explore and find your way around the system
     • You do not have to learn complicated commands
     • You get the benefits of using WYSIWYG
     • They let you exchange data between two different softwares
   • Disadvantages
     • GUI's take much larger amount of hard disk space than other interfaces
     • They need significantly more memory (RAM) to runn interfaces
     • They use more processing power than other types of interface
     • They can be slow for expirienced programmes
   • GUI (Graphical user interface). Allows people to interact through electronical devices through graphical icons

2. Menu Interface

   • Advantages
     • Extremely easy to use
     • There are no commands to remeber or learn
     • Step by step instructions are given so that the user doesnt have to remeber anything
   • Disadvantages
     • A poorly designed Interface cna be very slow
     • It can be very irretating if there are too many menus
     • The menu usually takes us most of the screen so you keep have to flicking back

3. Command line

   • Advantages
     • If the user knows the commands then this type of interface can be faster than any other type of interface
     • This type of interface does not use as much CPU processing time than others
     • A low resolution means a cheaper moniter can be used with this type of interface
     • This type of interface needs much less memory
   • Disadvantages
     • For someone that has never used CLI interface it can be very confusing
     • Commands have to be typed in preciseley or the command will not work
     • If you mis type an instruction is usually makes you start from scratch again

4. Speech and Sound

   • Advantages
     • The user does not need to be trained in how to use interface
     • More flexibility than a dialouge interface
   • Disadvantages
     • Reliability remains an issue - the interface cna only respond to commands that have been programmed
     • Not widley avalible as other forms of interface are often superior

5. Touch sensitive

   • Advantages
     • You can see all options avalible
     • Low level ICT skills needed
     • Most touch screens can be fixed
     • Can be adapted for many uses eg cashpoint, shop, ticket sales
   • Disadvantages
     • Can be easily damaged
     • More expensive than buying a computer
     • Not so good in sunchine becasue you cant see the screen

6. A human computer interface is how people interact with computers and to what extent computers are developed for successful interaction with human beings.

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