The functions of I/O interface are:
·
To provide
a friendly platform between processor and I/O devices.
·
To provide
necessary handshaking signals to the I/O devices so that processor can
communicate with the I/O devices effectively.
·
To convert
Serial data into parallel form or vice versa if different data formats are
being exchanged.
·
To
overcome the data transfer rates among the processor and I/O devices. As
processor is fast accessing component and I/O are relatively slower.
·
To provide
clear separation of one I/O device from another so that they do not disturb
each other during I/O operation.
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