NATIONAL OPEN UNIVERSITY OF NIGERIA

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

CIT 353: INTRODUCTION TO HUMAN COMPUTER INTERACTION

Credit: 2 units

TIME ALLOWED: 2 Hours

INSTRUCTION: Answer Question 1 and any other Three (3) Questions

1(a) Define Moore’s law. (3 marks)

(b) Justify the validity of Moore’s law in the year 2020 using related computer specifications known to you. (4 marks)

(c) What are the implications of your response in

(1b) on finite speed? (3 marks)

(d) Identify the components of the interaction model in human computer interaction. (3 marks)

(e) Explain the concept of software engineering. (5 marks)

(f) Describe the activities in the software lifecycle. (7 marks)

2. (a) What is a pattern in human-computer interaction? (2 marks)

(b) List any three (3) characteristics of a pattern. (4 marks)

(c) Enumerate 2 ways of identifying aspects of a widget. (2 marks)

(d) “Not every computer requires a user interface”. Explain the implications of this statement in relation to computer information systems. (4 marks)

(e) List any three (3) perceptual principle in display design. (3 marks)

3 (a) Explain briefly the following computer terms: (i) Menu (ii) Natural Language (iii) Query Interfaces (iv) Spreadsheets (v) cascading menu (7â…Ÿ2 marks)

(b) List any five (5) elements of a WIMP interface. (2â…Ÿ2 marks)

(c) State five critical issues of consideration in menu design. (5 marks)

4 ((a) Define design rationale. (2 marks)

(b) List three (3) associated benefits of design rationale. (3 marks)

(c) Write the syntax for a typical read-evaluation loop the Figure below. (5 marks)

(d) List any five (5) Scheiderman’s golden rules of design. (5 marks)

5(a) A facial recognition software organization intends to capture a major market segment from it’s rival competitor. As an expert in the field of human computer interaction, identify a specific usability evaluation technique required in achieving the objective. Give reasons for your answer. (6â…Ÿ2 marks)

(b)For a large domain and based on your response in 3(a) above, what knowledge representation technique would you represent the knowledge gathered from prospective users? (2 marks)

(c) List three (3) techniques applicable in knowledge representation. (1â…Ÿ2 marks)

(d) Briefly explain stages in the design lifecycle using the Figure below . (5 marks)