Practice - Direct Memory Access (DMA): Principles, DMA Controller Operation, and Advantages for High-Speed Data Transfer
Practice Questions
Test your understanding with targeted questions
What does DMA stand for?
💡 Hint: Think about how peripherals communicate with memory.
What is the primary role of a DMA controller?
💡 Hint: Consider what makes DMA different from traditional data transfer methods.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the function of a DMA controller?
💡 Hint: Think about the difference between traditional controlling and DMA.
True or False: DMA frees the CPU from handling every byte of data transfer.
💡 Hint: Consider how DMA changes the role of the CPU in data transfers.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Consider a system with a CPU that takes 5 cycles to handle a byte transfer and a DMA that efficiently transfers that byte in 3 cycles. Write an algorithm that demonstrates when it is more beneficial to use DMA over CPU transfers for a 1024-byte data block.
💡 Hint: Calculate both scenarios and compare.
Analyze the impact on CPU performance if DMA is integrated into a system that constantly handles high data rates from high-speed peripherals. Include both positive and negative aspects.
💡 Hint: Think about both benefits and challenges of integrating new features into existing systems.
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Reference links
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