Practice 8254 Operating Modes (relevant To Experiment) (1.4.4) - Interrupt Handling and Timer Interfacing (8085/8086 Microprocessors with 8253/8254 Timer)
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8254 Operating Modes (Relevant to Experiment)

Practice - 8254 Operating Modes (Relevant to Experiment)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is Mode 0 used for in the 8254 timer?

💡 Hint: Consider what happens when a count is loaded and reaches zero.

Question 2 Easy

Which output state does Mode 3 start with?

💡 Hint: Think about the nature of square waves.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does Mode 0 primarily generate?

Continuous pulse
Interrupts
Single delay
Square wave

💡 Hint: Focus on the basic functions of each mode.

Question 2

True or False: Mode 2 outputs a continuous square wave.

True
False

💡 Hint: Recall the characteristics of each mode.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Explain how to achieve a timed event using Mode 0 if the maximum count is reached. What adjustments might you make?

💡 Hint: Think about the limits of the 16-bit capacity.

Challenge 2 Hard

Design a small circuit using Mode 2 that reads a temperature sensor every 5 seconds. Outline steps on how you'd implement it.

💡 Hint: Consider the sensor's response time and how often it needs to be read.

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Reference links

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