Practice - Principles of Direct Memory Access (DMA)
Practice Questions
Test your understanding with targeted questions
What does DMA stand for?
💡 Hint: Think about the role of DMA in data movement.
Explain the role of the DMA controller.
💡 Hint: Consider what the CPU does initially.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is Direct Memory Access (DMA)?
💡 Hint: Consider how the CPU interacts with memory.
True or False: In DMA, the CPU is involved in every data transfer.
💡 Hint: Think about CPU workload during transfers.
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Challenge Problems
Push your limits with advanced challenges
Consider a situation where a CPU has to transfer 4KB of data to a peripheral without DMA versus using DMA. Calculate and discuss the CPU cycles spent in both scenarios if the CPU takes 10 cycles per byte without DMA and 2 cycles per byte with DMA.
💡 Hint: Think about the overall CPU cycle management.
Discuss the impacts on system performance and power consumption when using DMA in a system with high I/O demands.
💡 Hint: Contrast the CPU's activity levels with and without DMA.
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Reference links
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