Question

Assume that you may assign a priority level from 0 (lowest) to 7 (highest, NMI ) for each of the following processor interrupt events. For each of the following events, assign it a priority level and briefly describe your reason for assigning it that level.

(a) A/D converter has new data available.
(b) 10 millisecond real time clock tick.
(c) Mouse click.
(d) Robot hand has touched solid surface.
(e) Memory parity error.

Answer 1

As this is regular and continuous checking process.A/D converter converts analog signal from sensor to digital signal.

Priority Level

(a) A/D converter has new data available : 0(lowest)

As this is regular and continuous checking process.A/D converter converts analog signal from sensor to digital signal.

(b) 10 millisecond real time clock tick: 5

As if the clock tick change, can serve as a catastrophe for our system. Our system accuracy and funcitoning depends only on the proper function of real time clock.

(c) Mouse click. : 0

As this is regular and continuous checking process.A/D converter converts analog signal from sensor to digital signal.

(d) Robot hand has touched solid surface.: 6

It can permanently damage our robotic hand.

(e) Memory parity error.:7

Memory failure is a havoc for our system. As this can lead to dysfunctioning of our system.