Lecture on Basic I/O Interface

General objective of this Lecture is to presentation on Basic I/O Interface. Here major focus on I/O Port Address Decoding. Here also discuss on I/O port address decoding is very similar to address decoding and Reading or writing to an I/O device is to read or write to that port address. Finally discuss and analysis Basic I/O Interface system with explanation and pictures, any I/O device is addressed by a port number.