The pin that is used to inform the CPU that the previous operation is completed is
A. RQ (active low)
B. GT (active low)
C. DRQ
D. SINTR
Answer:A
The pin that is used to inform the CPU that the previous operation is completed is
A. RQ (active low) B. GT (active low) C. DRQ D. SINTR
Explanation: The SINTR pins are used by the channels either to inform the CPU that the previous operation is over or to ask for its attention or interference if required, before the completion of the task.