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Computer Architecture and Organization

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A device with a data transfer rate of 20 KB/sec is connected to a CPU. Data is transferred byte-wise. Let the interrupt overhead be 10 microsecond

1. Total time required in programmed IO for 10 bytes data transfer?

2. Total time required in interrupt IO for 10 bytes data transfer?

3. What is the minimum performance gain of operating the device under interrupt mode over operating it under program-controlled mode?
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