Interrupts Flashcards
1
Q
What is an interrupt?
A
A signal usually generated when an input or output is required
2
Q
What are hardware interrupts?
A
Generated when a key is pressed or when the mouse is moved
3
Q
What are software interrupts?
A
Generates by a program requiring disk input or output
4
Q
How does the o/s assist interrupts?
A
o/s will suspend the current program in order to deal with the interrupt (then resume from the point reached)
5
Q
Explain interrupt priorities.
A
interrupts will have different priorities
hardware interrupt is more important than an input interrupt
