8086: IO-Mapped & Memory-Mapped Interfacing , Isolated , Direct I/O Indirect I/O String IN and OUT
8086: I/O Interfacing IO-Mapped & Memory-Mapped , Isolated I/O Direct I/O Indirect I/O String IN and OUT Switch Interface LED Interface, Simple Output Port using 74373 Latch , Simple Input Port using 74245 Trans-receive Tristate Buffer