Practice The Importance of Context in Flag Usage - 3.2.3 | 3. Understanding Overflow in Signed and Unsigned Arithmetic | Computer Organisation and Architecture - Vol 2
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The Importance of Context in Flag Usage

3.2.3 - The Importance of Context in Flag Usage

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What happens when you add -5 and -3 in signed arithmetic using 4 bits?

💡 Hint: Think about the sign bits.

Question 2 Easy

In unsigned arithmetic, how does adding 5 and 4 behave?

💡 Hint: Check the upper limit for 4 bits.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the overflow flag indicate?

Carry out of MSB
Invalid result due to overflow
Both A and B

💡 Hint: Consider what happens when results don’t fit.

Question 2

True or False: The carry flag is generally significant in signed arithmetic.

True
False

💡 Hint: Reflect on the role of the carry flag in signed operations.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Analyze the addition of two 4-bit signed numbers: 0111 (+7) and 0001 (+1). What flags are set after the operation?

💡 Hint: Consider max limits in signed numbers.

Challenge 2 Hard

Given two signed numbers -4 (1100 in binary) and +1 (0001 in binary), what are the results and flags after addition?

💡 Hint: Focus on how negatives and positives interact.

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