Practice Conditional Instructions (2.2.5) - Signed Arithmetic and Overflow

Practice: Conditional Instructions

Lesson 2.2.5Signed Arithmetic and Overflow

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does the zero flag indicate?
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Think about what condition prompts a jump if zero.
Question 2.
What happens to the sign flag after an addition of two positive numbers?
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Consider the range of results from adding two positives.
3Question 3.
What does the overflow flag indicate?
- The result is zero
- The result exceeds the representable limit
- The last operation was successful
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Reflect on how the limits of data representation affect operations.
4Question 4.
True or False: The zero flag indicates that an arithmetic operation is negative.
- True
- False
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Consider what each flag represents!
Question 5.
You are tasked to design a simple arithmetic processor that can handle signed integers. If you add two large positive numbers, how will the overflow and carry flags react? Illustrate with an example.
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Analyze the bit patterns carefully!
Question 6.
Create a flowchart for a program that sums integers until the sum exceeds a certain threshold. Indicate how you would use flags to determine when to stop summing.
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Focus on what decisions depend on the flags!

4 more questions in this section. Enroll free to practise them all.