MURANG’A UNIVERSITY COLLEGE
(A Constituent College of Jomo Kenyatta University of Agriculture and Technology)
University Examinations 2015/2016 Academic Year
SCHOOL OF BUSINESS AND ECONOMICS
SPECIAL/SUPPLEMENTARY SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF BUSINESS INFORMATION TECHNOLOGY
ICS 2101: COMPUTER ORGANIZATION  
TIME 2 HOURS 
MAIN CAMPUS 

Instructions: Answer Question 1 and Any Other Two.
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Question One
a.	Define the following concepts as used in computer organization and architecture
i)	Instruction cycle
ii)	Registers
iii)	Parallel processing
iv)	Operand
v)	Latency									(5 marks)
b.	Differentiate between computer organization and computer architecture												(4 Marks)
c.	Explain the consequences of Moore’s law				(5 marks)
d.	Describe the Von Neumann architecture				(3 Marks)
e.	Outline the four basic functions of a computer			(4 Marks)
f.	What are the differences among direct mapping, associate mapping and set-association mapping								(6 Marks)
g.	List three broad classification of external/peripheral devices	(3 Marks)
Question Two
a.	List and briefly define the possible states that define an instruction execution									(12 Marks)
b.	What is the difference between DRAM and SRAM in terms of characteristics such as speed, size and cost?						(8 Marks)

Question Three
a.	Describe the four structural components of the central processing unit (CPU)									(10 Marks)
b.	Discuss the major functions of an 1/0 module		(10 marks)

Question Four
a)	Explain the general categories of functions are specified by computer instructions. 								(10 Marks)
b)	Discuss any five commonly used addressing modes		(10 marks)