Practice Program 1: 8255 Initialization And Static Output To Port A (4.1) - Parallel I/O Interfacing with 8085 (8255 Programmable Peripheral Interface)
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Program 1: 8255 Initialization and Static Output to Port A

Practice - Program 1: 8255 Initialization and Static Output to Port A

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does the Control Word do in the 8255?

💡 Hint: Think about setup instructions for devices.

Question 2 Easy

What is Mode 0 in the context of the 8255?

💡 Hint: Consider how devices communicate without extra signals.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the primary purpose of the Control Word in the 8255?

To specify port direction and modes
To output data
To reset the device

💡 Hint: Think about what setup instructions are necessary for devices.

Question 2

True or False: Port A can only be configured as an input.

True
False

💡 Hint: Consider the flexibility of the ports.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Design a program to configure the 8255 and flash LEDs in sequences using different patterns rather than a static output.

💡 Hint: Think about how to loop through different data values.

Challenge 2 Hard

Using the 8255, explain how you would implement error checking after sending data to ensure the correct data is output to Port A.

💡 Hint: Consider how to validate the output by reading it back.

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Reference links

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