"Explain the difference between polling and interrupt-driven I/O. When would you choose one over the other in an embedded system, and what trade-offs would you consider around CPU usage, latency, and implementation complexity?"
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The Question
"Explain the difference between polling and interrupt-driven I/O. When would you choose one over the other in an embedded system, and what trade-offs would you consider around CPU usage, latency, and implementation complexity?"
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