Scenario:

In a computing environment, there are devices with varying probabilities of issuing

an interrupt: Sensor Array $($SA$)$ with $0\mathrm{.}1,$ Webcam $($WC$)$ with $0\mathrm{.}2,$ Audio Interface $($AI$)$

with $0\mathrm{.}3,$ and Data Logger $($DL$)$ with $0\mathrm{.}4.$ With a daisy chain propagation delay of $1s$

and software polling time of $0\mathrm{.}5$ s per device, the task is to determine an optimal

interrupt handling strategy and device order to minimize the average handling delay.

Task:

Recommend an interrupt handling strategy and device order to minimize delay, and

calculate the average delay for your recommended configuration.

Recommended Strategy and Device Order:

Given the probabilities, placing devices with higher interrupt probabilities first

minimizes the delay. Therefore, the optimal device order is DL$,$ AI$,$ WC$,$ SA$,$ based on

descending probabilities of interrupt.

Questions:

Calculate the average delay for the recommended device order using the daisy chain

method.

The average delay in the daisy chain configuration with the recommended device order is

$s.$

$($Optional$)$ reasoning: