| Subject |
follow by |
state |
|---|
| usability principle 1 | testing a user interface on users | Do not rely only on usability guidelines - always test with users |
| usability principle 10 | - accommodating people from different locales and people with disabilities
- ensuring that the system is usable by both beginners and experts
| Consider the needs of different groups of users |
| usability principle 11 | - organizing help well
- integrating help with the application
- ensuring that the help is accurate
| Provide all necessary help |
| usability principle 12 | - using similar layouts and graphic designs throughout your application
- following look-and-feel standards
- mimicking other applications
| Be consistent within the application and between applications |
| usability principle 2 | | Base UI designs on users' tasks as expressed in use cases |
| usability principle 3 | - making sure users can move from step to step easily as they perform their tasks
- making sure that user has to read the smallest amount of text, to navigate the least, to type the least and not to be lead into making errors
- making sure the user does not have to repeatedly select menu items to complete a single task
- avoiding sequences of modal dialogs, since they give users the feeling that the computer is in control of the interaction
| Ensure that the sequences of actions to achieve a task are as simple as possible |
| usability principle 4 | - Ensuring that the user can see what commands are available and are not available
- making the most important commands stand out
| Ensure that the user always knows what he or she can and should do next, and what will happen when he or she does it |
| usability principle 5 | - informing users of the progress of operations and of their location as they navigate
- when something goes wrong, explaining the situation in adequate detail and help the user to resolve the problem
| Provide good feedback including effective error messages |
| usability principle 6 | ensuring that all operations can be done and that it is easy for the user to navigate back to where they came from | Ensure that the user can always get out, go back or undo an action |
| usability principle 7 | - Recognizing that users are very sensitive to slow response time, and that they compare your system to others in this regard
- keeping response time less than a second for most operations
- warning users of longer delays and inform them of progress
| Ensure that response time is adequate |
| usability principle 8 | - making sure that everything that appears on the screen should be easily understandable to users
- avoiding technical jargon and acronyms
- employing technical writers to compose text and graphic designers to create graphics
- labelling items so their meaning is obvious
| Ensure that the user always feels in control |
| usability principle 9 | - trying to avoid displaying too much information
- organizing the information effectively
| Ensure that the UI's appearance is uncluttered |
Object Oriented Software Engineering View all facts Glossary Help
