Practice Handling Different Symbol Sizes - 3.2.1 | 3. Understanding Overflow in Signed and Unsigned Arithmetic | Computer Organisation and Architecture - Vol 2
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Practice Questions

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Question 1

Easy

What does the Overflow Flag indicate?

💡 Hint: Think about when operations generate results outside of the number range.

Question 2

Easy

In unsigned arithmetic, do we consider the Overflow Flag?

💡 Hint: Reflect on the definitions of the two types of arithmetic.

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Interactive Quizzes

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Question 1

What is the purpose of the Overflow Flag?

  • To indicate a carry-out
  • To signal invalid results
  • To confirm correct results

💡 Hint: Think about when results exceed the capability of your number system.

Question 2

(True or False) The Carry Flag is used in unsigned arithmetic only.

  • True
  • False

💡 Hint: Remember the distinction between signed and unsigned arithmetic.

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Challenge Problems

Push your limits with challenges.

Question 1

Using 4-bit signed binary, add the values -1 and -1. What will be the result, and explain if there is an overflow?

💡 Hint: Consider how -1 is expressed in two's complement.

Question 2

Create two signed 4-bit numbers that, when added together, yield a carry but not an overflow. Identify the numbers and the resulting flags.

💡 Hint: Base your answer on small positive integers that can sum up without exceeding the range.

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