Practice Floating and Unused Inputs - 5.3.10 | 5. Logic Families - Part C | Digital Electronics - Vol 1
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What happens to a floating input in TTL logic?

πŸ’‘ Hint: Think about the nature of reverse bias in diodes.

Question 2

Easy

Should unused inputs of AND gates be left floating?

πŸ’‘ Hint: Consider how noise can affect circuit performance.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What happens when inputs of TTL devices are left floating?

  • They act like logic LOW
  • They act like logic HIGH
  • They have no effect
  • They short circuit

πŸ’‘ Hint: Think about the nature of diode behavior in TTL.

Question 2

Unused inputs of NAND gates should be tied to:

  • Ground
  • VCC
  • Either A or B
  • None of the above

πŸ’‘ Hint: Consider how these inputs affect the logic circuit.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You have a TTL NAND gate with two unused inputs. Describe how you would configure them to ensure reliable operation, considering noise levels.

πŸ’‘ Hint: Think about how external signals affect your circuit.

Question 2

Given a digital circuit involving several NAND and OR gates, explain the implications of not terminating unused inputs.

πŸ’‘ Hint: Consider how each gate interacts with digital logic.

Challenge and get performance evaluation