FUNDAMENTALS OF COMPUTER

OPERATING SYSTEMS FOR COMPUTERS

COMPUTER OPERATING SYSTEMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which interrupt is the third highest priority?
A
Hardware:e.g. power button pressed.
B
Software:e.g. a program needs to run a routine (for example, to automatically save a document being edited by a user).
C
Time triggered:e.g. in data logging applications.
D
Peripheral:e.g. user has moved the mouse.
Explanation: 

Detailed explanation-1: -TRAP is the internal interrupt that has the highest priority among all interrupts except the divide by zero exception.

Detailed explanation-2: -The highest interrupt priority upon reset in 8051 is external interrupt 0.

Detailed explanation-3: -TRAP. It is a non-maskable interrupt, having the highest priority among all interrupts.

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