Practice Four-bit Adder-subtractor (7.1) - Arithmetic Circuits - Part B
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Four-bit Adder-Subtractor

Practice - Four-bit Adder-Subtractor

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does BCD stand for?

💡 Hint: Think about how decimal numbers can be represented using binary.

Question 2 Easy

What is the correction added in BCD when the sum exceeds 9?

💡 Hint: Remember how we adjust sums that exceed the BCD range.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the variable K indicate in the correction process?

It's always zero
Correction is needed
Represents a BCD digit

💡 Hint: Focus on what conditions mean K is activated.

Question 2

True or False: The BCD sum can go directly to output without correction if it's 4.

True
False

💡 Hint: Remember the valid BCD range.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

If you had a multi-digit BCD addition involving 19 + 23, outline the steps taken and the final output.

💡 Hint: Consider each digit and handle cascaded carries appropriately.

Challenge 2 Hard

Create a logic circuit diagram for adding two BCD numbers, ensuring correction logic is displayed.

💡 Hint: Use Tables and logic gates to make your schematic clear.

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Reference links

Supplementary resources to enhance your learning experience.