Which interrupt priority scheme connects multiple I/O devices in a hardware series chain where the device nearest to the CPU has the highest priority?
Subject: Computer Architecture and Organization
Topic: Input-Output (I/O) Organization & DMA
Options:
- Option A: Parallel Priority Interrupt
- Option B: Daisy Chaining Scheme
- Option C: Polling Interrupt Method
- Option D: Software Vectored Interrupt
Correct Answer:
Option B: Daisy Chaining Scheme
Explanation:
Daisy Chaining is a hardware priority scheme where all devices are connected serially along an Interrupt Acknowledge line. The device closest to the CPU intercepts the signal first, giving it the highest priority.