NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
APRIL 2019 EXAMINATION

Course Code:               CIT 759                                    

Course Title:               Micro Computing and WWW

Course Credit              Unit: 2

Time Allowed:             2 Hours

Instruction:                  Answer Question 1 and any other three questions

Question 1

(a)        Explain the basic components of a microcomputer system -  (6 marks)

(b)       What is a Sound Card?   - (4marks)

(c)        State the safety precautions for workstations on microcomputers. - (6 marks)

(d)       Highlight the steps to create a Table with 5 rows and 3 columns in Microsoft word document  - (6 marks)

(e)         List any 6 hardware components?  - (3 marks)

Question 2

1. Describe common Video File types. - (4 marks)
2. In a tabular form, differentiate display technologies in microcomputer system based on the following characteristics: Size, Power Consumption, Potential viewing Problems and Price - (8 marks)
3. State any three (3) types of adapter card found on the motherboard of a microcomputer system.   (3 marks)

Question 3

1. Extensively differentiate between RAM and ROM in tabular form - (5 marks)
2. State the factors that affect the quality of a microcomputer screen. -  (6 marks)
3. Explain the two different types of optical scanner. -  (4 marks)

Question 4

1. List four (4) types of optical disk used in microcomputer- 4 marks)
2. List any six (6) ports and one corresponding external device that connect to it. - (6 marks)
3. Describe the procedures to Check Spellings and Grammar in Microsoft word. -  (5  marks)

Question 5

            (a) Describe the steps to delete a folder in a microcomputer system - (5 marks)

(b) Explain the most common colour standards on microcomputer screen - (6 marks)

(c) Explain how the Movie Maker works on microcomputer - (4 marks)