What is the function of data input command in I/O command?

2021

Answer: D. It cause the interface to respond by transferring data from one of its register to bus — It cause the interface to respond by transferring data from one of its register to bus

1. A.

   Activate the peripheral and to inform it what to do

2. B.

   To check status conditions in the interface and the peripheral

3. C.

   It cause the interface to respond by transferring data from bus into one of its registers

4. D.

   It cause the interface to respond by transferring data from one of its register to bus

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