NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
JANUARY 2021 EXAMINATION

COURSE CODE : CIT811

COURSE TITLE : USER INTERFACE DESIGN AND ERGONOMICS

CREDIT UNIT : 3

TIME ALLOWED : 2 ½ HOURS

INSTRUCTION : ANSWER QUESTIONS 1 (ONE) AND ANY OTHER FOUR (4)

1a) State the usefulness of the following user interfaces (3mks)

i) Attentive user interfaces

ii) Crossing-based interfaces

iii) browser window

iv) Group interfaces

v) Executive-Process/Interactive Control System

vi) Text user interfaces

1b) Mention and briefly comment on the user interfaces that are common various fields outside desktop computing (3mks)

1 c.) Compare the following in relation to User Interface Design (7Mks)

1d) Enumerate and briefly comment on the concepts of Usability (5marks)

1e) Justify the benefits of the following interaction styles

i) Command Language (2 Marks)

ii) Menu Selection (2 Marks)

2a). In the context of user interface design, define the term Prototyping? What are the main stages of Prototyping? (5mark)

2b) what is IxD? List the six major steps of IxD (4 mks)

2c) Write short notes on i) Visibility ii) Accessibility (3 Marks)

3. What is Heuristics in relation to user interface design? Itemize any four Nielsen and Molich's Heuristics (4mks)

3b) why is usability necessary in HCI? What usability considerations you would you adopt during user interface design? (5Mks)

3c) What is you understand by Iterative Design? What requirements of interactive design should be met during Interface Design? (3 Marks)

4a) Explain the aspects of ergonomics you know (5mks)

4b) Enumerate any eight (8) kinds of layout managers (4marks) 4c) Sate the goal of zero training and briefly comment the types of training involved in software design you know (3mks)

5a. State any strengths and limitations of direct manipulation? (5½Marks)

5b) itemize the useful hints for debugging outputs [4 marks]

5c) In what ways are constraints useful? [2½ marks]

6a) Mention and briefly describe any four examples of Object-oriented user interface (5 Marks)

6b) what is an interface builder? Enumerate their role in interface design? (4mks) 6c) State the advantages and disadvantages of Widgets (3mks)