Physics · Computer Organization
Which one of the following is a major drawback of Programmed and Interrupt-Driven I/O?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The processor is tied up in managing the I/O transfer; a number of instructions must be executed for each I/O transfer.✓
- 2A more efficient technique is to use a daisy chain, which provides a hardware poll.
- 3When the processor detects an interrupt, it branches to an interrupt service routine whose job is to poll each I/O module.
- 4It prevents the device from sending an interrupt signal directly to the CPU.
Correct answer
The processor is tied up in managing the I/O transfer; a number of instructions must be executed for each I/O transfer.
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