Usability. By: Sharett Wooten and Gwen Payne. What is Usability
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By: Sharett Wooten
How fast can a user who has never seen or used this interface before use it sufficiently.
Efficiency of Use
Once an experienced user has learned to use the system, how fast can he/she accomplish task
Can a user remember enough to use it effectively to the next time, or does he/she have to start over.
Error Frequency and Severity
How often do users make errors while using the system, how serious are the errors, and how do users recover from the errors.
How much does the user like using the system.
People use usability in the home to make everyday duties easier and more efficient.
There are three levels at which ergonomic knowledge can be used:
Tolerable conditions do not pose known dangers to human life or health
Acceptable conditions are those upon which the people involved can voluntarily agree
Optimal conditions are so well adapted to human characteristics, capabilities, and desires that physical, mental, and social well-being is achieved
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