EBK ACTIVITIES MANUAL FOR PROGRAMMABLE
5th Edition
ISBN: 8220102795983
Author: Petruzella
Publisher: YUZU
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Chapter 9, Problem 4RQ
Program Plan Intro
a.
Jump instruction:
In PLC
Jump to Label instruction:
The jump to label instruction either jumps forward or backward to the corresponding label instruction.
Explanation of Solution
b.
Affecting jumped rungs:
- At the time of executing a jump-to-label instruction, the jumped rungs are not scanned by the processor...
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You are given a class that processes purchases for an online store. The class receives calls to:
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Retrieve the prices for items from a database
• Record the sold items
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Update the database
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Refresh the webpage
a. What architectural pattern is suitable for this scenario? Illustrate your answer by drawing a
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c. Draw a sequence diagram for the update operation.
Chapter 9 Solutions
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