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1- Consider the following scenarios and describe the design principle (Visibility, Feedback, Constraint, Consistency, or Affordance) that the interface is violating:
Some dialog boxes in the same application have the OK/Cancel buttons arranged where the OK button is placed to the left of the Cancel button: [OK] [Cancel]. Other dialog boxes have the buttons arranged in reverse order where the OK button is placed to the right of the Cancel button: [Cancel] [OK].
A door with no Push/Pull label on it to tell whether it should be pushed or pulled. Note that the door has a handle.
A company has just released the first version of its word processing application. When no object is selected, the Cut command was enabled.
You switch the light on but the light bulb does not light up.
– Explain why you chosen specific design principle has been violated.
– What solution can you propose to the scenario above to make it adhere to the design principle it is violating?
2 -Find two examples of user interfaces, one that you consider a good design and one that you consider a bad design. Note that the good design does not have to be uniformly good, since you may discover problems with it on closer inspection. Likewise, the bad design does not have to be uniformly bad. Probably the most interesting examples will be mixed.
Your interfaces might be desktop software, web applications, smartphone apps, consumer devices, car dashboards, building entrances, traffic intersections, shower controls, etc.
For each interface, you should:
Describe the purpose of the interface and its intended users
Analyse its good and bad points of usability with reference to all the dimensions of usability:
learnability
visibility
efficiency
errors
you may discuss other aspects of usability if you have space and consider them important
illustrate your analysis with appropriate screenshots or photographs
Limit to roughly 50 lines (10 font size, Times New Roman) for each interface, for a total of 2 interfaces (100 lines) for your entire report. You can include as many images as are helpful; they don’t count toward the page limit.
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