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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What are the two bits used to select which counter to program in the 8254?
💡 Hint: Think about how many counters are there in total.
Question 2
Easy
What is the function of the BCD bit in the 8254 control word?
💡 Hint: Consider how numbers can be represented in different forms.
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 does the BCD bit determine in the 8254 Control Word?
- Binary counting
- BCD counting
- Both Binary and BCD
💡 Hint: Recall how different count systems exist.
Question 2
True or False: Mode 3 of the 8254 timer generates an interrupt on terminal count.
- True
- False
💡 Hint: Reflect on the functionalities of different modes.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If the input clock frequency is 1 MHz, calculate the initial count needed to produce a square wave of 2 kHz. What should the control word look like?
💡 Hint: Use the formula for initial count and remember the binary representation for control word settings.
Question 2
Describe how a misconfigured 8254 control word might affect the output and suggest some troubleshooting steps.
💡 Hint: Think of each bit in the control word as a switch that either opens or closes the right paths for the timer's function.
Challenge and get performance evaluation