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Computer Applications (Comp 100) Question Paper

Computer Applications (Comp 100)

Course:Computer Science

Institution: Kenya Methodist University question papers

Exam Year:2012

Computer Applications (COMP 100) 3RD TRIMESTER 2012
KENYA METHODIST UNIVERSITY
END OF 3''RD ''TRIMESTER 2012 (EVENING) EXAMINATIONS
FACULTY : COMPUTING AND INFORMATICS
DEPARTMENT : COMPUTER SCIENCE AND BUSINESS
INFORMATION
UNIT CODE : COMP 100
UNIT TITLE : COMPUTER APPLICATIONS
TIME : 2 HOURS

Instructions:
Answer question One (compulsory)
SECTION A
Question One
Explain the following terms
Computer
(2 marks)
Data
(2 marks)
Information
(2 marks)
Computer virus
(2 marks)
Explain any five applications of computers.
(4 marks)
Briefly discuss any three computer input devices based on their layout and working.
(6 marks)
Using an illustration explain how the central processing unit (CPU) executes programs.
(6 marks)
Explain any five characteristics of computers.
(6 marks)

SECTION B
Answer any two questions from this section.

Question Two
Using appropriate examples explain the conversion of:
Decimal to binary
(5 marks)
Decimal to hexadecimal
(5 marks)
Find the TWO’s complement of 1001110.
(5 marks)
Find the ONE’s complement of 1101011.
(5 marks)

Question Three
Discuss five generations of computers along with the key characteristics of computers in each generation.
(15 marks)
Describe the various terms of electronic infections.
(5 marks)

Question Four
Describe any four factors that influence the speed of a computer. (8 marks)
Using examples describe any four types of information systems.
(12 marks)

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