Practice The Importance Of Context In Flag Usage (3.2.3) - Understanding Overflow in Signed and Unsigned Arithmetic

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6 sample questions

Question 1.
What happens when you add -5 and -3 in signed arithmetic using 4 bits?
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Think about the sign bits.
Question 2.
In unsigned arithmetic, how does adding 5 and 4 behave?
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Check the upper limit for 4 bits.
3Question 3.
What does the overflow flag indicate?
- Carry out of MSB
- Invalid result due to overflow
- Both A and B
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Consider what happens when results don’t fit.
4Question 4.
True or False: The carry flag is generally significant in signed arithmetic.
- True
- False
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Reflect on the role of the carry flag in signed operations.
Question 5.
Analyze the addition of two 4-bit signed numbers: 0111 (+7) and 0001 (+1). What flags are set after the operation?
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Consider max limits in signed numbers.
Question 6.
Given two signed numbers -4 (1100 in binary) and +1 (0001 in binary), what are the results and flags after addition?
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Focus on how negatives and positives interact.

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