Human Computer Interface

Human Computer Interface

1. Children

   • Have minimum amount of text on screen
   • Use child friendly font
   • Have an uncluttered appearence
   • Visual Prompts eg pictures of cats
   • Instant feedback on their responses

2. Disabled

   • Magnify areas of the screen for people with poor eyesight
   • Use of correct colour schemes for colour blind people
   • Use of large mouse or trackerball for people with poor coordination
   • Visual messages on screen instead of sound for people who are deaf
   • Brainwave controlled devices for physically handicapped

3. Factors

   • Layout appropriate to the task - uncluttered text for young children learning to read
   • Consistency of signposting and pop up information - every next should be in the same location using the same icon
   • Clear navigational structure - help users learn their way around the system
   • Location of where machine is to be used - no sound in a noisy area
   • Online help files - tools tips telling the user what to do

4. Novice and Expert

   • Novice users priority is ease of learning
     • Could provide tutorials for novice users
     • Novice users should never be left wondering what to do
     • Novice users will need a clear navigational structure
   • Expert users want to get the job done in the quickest possible time
     • An expert can customise the interface to suit their needs
     • Expert users often type at high speeds and memorise key combinations
     • Provide shortcuts for experts