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The Interaction (Interaction Styles (Command Line Interface
Instructions…
The Interaction
Interaction Styles
- Command Line Interface
Instructions to the computer directly
- Menus
Set of options displayed on screen
less recall - easy to use
based on recognition so should be meaningful
- Speech recognition
Easy to use and natural way to communicate
Hard to be precise and very ambiguous
Try to understand subset and pick on key words
- Query
Involves user led through interface by questions
needs some understanding and expertise
- Forms
data entry or data retrieval
Requires good design and obvious correction facilities
Norman's Model
- user establishes goal
- formulate intention
- specifies actions at interface
- executes action
- perceives system state
- interprets system state
- evaluates system state with respect to goal
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Ergonomics
Good at defining standards and guidelines for constraining the way certain aspects of the system are designed
Examples
- Arrangement of controls and display
- surrounding environment
- health issues
- use of colour