August 2000
SD206 : SYSTEMS DESIGN

QUESTION 2

Total Marks: 15 Marks

• Question 1
• Question 3
• Question 4
• Question 5
• Cover Page

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SUGGESTED SOLUTIONS
for Question 2

(a) (i) What are the four basic symbols used in data flow diagrams? [4]
(ii) Give an example of a data flow diagram that uses the four symbols of
part (i). [4]

(b) (i) Differentiate between the terms hard real-time process and soft real-time
process. [2]
(ii) Give one example of a hard real-time system and one example of a soft
real-time system. [2]

(c) Describe the first step in developing a structure chart from a data flow diagram. [3]