Chapter 4 Interfacing I/O Devices. Interfacing I/O Devices. Using I/O devices data can be transferred between the microprocessor and the outside world. This can be done in groups of 8 bits using the entire data bus. This is called parallel I/O.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
WRInterfacing the LEDs (Control Circuit)
MVI A, Data ;load the data to be displayed
OUT FF ;send the data to output port FF
RDInterfacing the Switches (Control Circuit)
IN 0FH ;input data from port 0F into A
INPUT: IN 0FH