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Usability Principles

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  • 1. USABILITY PRINCIPLES
    Presented by: Prameela Jeppu
  • 2. Design for people
    2/26/2010
    USABILITY PRINCIPLES
    2
    Know your AUDIENCE
    Understand their GOALS
    Understand the TASKSnecessary to achieve those goals
  • 3. Don't limit your User Base
    2/26/2010
    USABILITY PRINCIPLES
    3
    Internationalization
    Localization
    Accessibility
  • 4. Match Application & Real World
    2/26/2010
    USABILITY PRINCIPLES
    4
    Always use words, phrases, and concepts that are FAMILIARto the user rather than terms from the underlying system.
    Use TERMSthat relate to the USER'S KNOWLEDGE of the tasks your application supports.
  • 5. Make the application consistent
    2/26/2010
    USABILITY PRINCIPLES
    5
    Consistency: one of the most important design principle, also the most ignored
    • Allows the user to become FAMILIARwith new applications more quickly
    • 6. Creates a sense of COMFORT & TRUST
    Application should be consistent in both APEARANCE& BEHAVIOR
  • 7. Keep the user informed
    2/26/2010
    USABILITY PRINCIPLES
    6
    Always let the user know what is happening in your application by using appropriate FEEDBACKat an appropriate time.
    When the user performs an action, provide feedback to indicate that the system has received the input and is operating on it.
    Feedback can be visual, audio, or both.
  • 8. Put the User in Control
    2/26/2010
    USABILITY PRINCIPLES
    7
    A user should always FEEL IN CONTROL, able to do what they want when they want
    MODALITY - should be able to switch between different tasks at any time
  • 9. Forgive the User
    2/26/2010
    USABILITY PRINCIPLES
    8
    Allow users to quickly UNDOthe results of their actions
    If an action is very dangerous, and there is no way to undo the result, WARNthe user and ask for confirmation.
  • 10. Provide Direct Manipulation
    2/26/2010
    USABILITY PRINCIPLES
    9
    Wherever possible, allow users to act on objects and data directly, rather than through dialogs or explicit commands
  • 11. QUESTIONS?
    2/26/2010
    USABILITY PRINCIPLES
    10
    THANK YOU!
    www.prokarma.comjprameela@prokarma.com

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