In certain interfaces, it is necessary to inform users of an abnormal condition or time-dependent information. It is important that the display of this information catches the user's attention. Suggest five ways a designer can successfully attract attention.
What will be an ideal response?
Consider an air traffic control system operator display with an alert condition of two planes being too close to each other. One can alert an operator by changing the color displayed for the plane’s identification information, using a warning that pops-up, using a warning that flashes on/off, an audible beep, or a constant audio alarm. Certainly usability testing these proposed solutions with real air traffic controllers so designers can trade-off successfully attracting the attention of the operator vs. causing one to totally lose their train of thought and make conditions worse.
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Delegates act as:
a) ways of sorting events b) a go-between for objects raising events and the methods that handle the events c) masks for methods that handle events d) a way to call many methods at once
Answer the following statements true (T) or false (F)
1. The following condition evaluates to True. (T/F) ("DOG" > and "CAT") And ("CAT" > "BIRD") And ("BIRD" > "aardvark") 2. Assume that A, B, and C are conditions, with A being true, B being true, and C being false. Give the truth value of (A And (Not B)). 3. Assume that A, B, and C are conditions, with A being true, B being true, and C being false. Give the truth value of (A And Not (B or C)). 4. Assume that A, B, and C are conditions, with A being true, B being true, and C being false. Give the truth value of (Not (A And B)). 5. Is the following condition true or false (assume a = 2, b = 3, and c = 3)? (a = c) Or (b = c)
The ____ in a list is the value of the middle item when the values are listed in order.
A. mean value B. median value C. average value D. mode value
?In the rapid application development (RAD) model in the accompanying figure, the _____ phase focuses on program and application development tasks similar to the SDLC.
A. ?requirements planning B. ?user design C. ?construction D. ?cutover