Human Computer Interface

Human Computer Interface

1. Factors when designing a good user interface

   • Consistency of signposting and pop up information
     • Navigation around the program should be consistent and easy to follow
   • Onscreen help and online help files
     • Tooltips to tell the user what to do
   • Layout appropriate to task
     • Bright colour scheme to attract a young child's attention
   • Ability of the user
     • An expert user will want shortcuts to get the task done quickly where as a novice user will need steps to guide them
   • Clear navigational structure
     • Helps users find their way around the program
   • Disabled access
     • A blind person could use voice input

2. Requirements of expert and novice users

   • A novice user will need ease of learning whereas an expert user will want to get the job done in the shortest possible time
     • Novice User
       • Need for clear navigational structure making it easy to use
       • Using helpscreens to show them how to do things
     • Expert user
       • Shortcuts which save having to go through a series of menus
       • Increased number of ways to perform the same task

3. Meeting the needs of a disabled user

   • Visually impaired people can have their screens configured to larger fonts
   • Visual messages on screen for the deaf
   • Use of speech recognition rather than keyboard for those who cannot use their arms
   • Magnify areas of the screen for people with poor eyesight
   • Use of correct colour scheme for colour blind people

4. Meeting the needs of children

   • Minimal amount of text on screen
   • Bright colours to attract a child's attention
   • Uncuttered appearace
   • Videos to keep them interested
   • Visual prompts like pictures