Practice Logical Instructions (7.3.3) - Microcontrollers: The 8051 System
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Logical Instructions

Practice - Logical Instructions

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does the logical AND operation do?

💡 Hint: Remember how bits interact; only '1 AND 1' gives '1'.

Question 2 Easy

How does the OR operation differ from AND?

💡 Hint: Think about inclusivity: both or either can make it true.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the AND operation return when applied to two operands?

Only where both are 1
Where either is 1
Where neither are 1

💡 Hint: Think about which bits must be '1' for the result to also be '1'.

Question 2

True or False: The CPL instruction affects the carry flag.

True
False

💡 Hint: What other instructions change flags? This one does not.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Write a program segment using AND and OR to manipulate bits in a status register.

💡 Hint: Consider what bits should represent on/off states.

Challenge 2 Hard

Explain how using logical instructions could simplify reading sensor data.

💡 Hint: How can masking help with just focusing on relevant bits?

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Reference links

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