How many ways of transferring data between the microprocessor and a physical I/O device: a. 2 b. 3 c. 4 d. 5

How many ways of transferring data between the microprocessor and a  physical I/O device:
a. 2
b. 3
c. 4
d. 5
by

1 Answer

Answer :

b. 3
by

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