Q486
Which of the following is not a characteristic of a daisy chaining priority control scheme?
A.
priority is programmable
AnswerB.
it is relatively easy to add more devices to the chain
C.
the failure of one device may affect other devices on the chain
D.
the number of control lines is independent of the number of devices on the chain
E.
None of the above
Answer: Option A
Solution
Answer: Option A
Solution:
In computing, a programmable interrupt controller (PIC) is an integrated circuit that helps a microprocessor (or CPU) handle interrupt requests (IRQ) coming from multiple different sources (like external I/O devices) which may occur simultaneously.