Upon completion of this chapter, you will be able to:
» List the 4 ports of the 8051
» Describe the dual role of port 0 in providing both data and addresses
» Code Assembly language to use the ports for input or output
» Explain the dual role of port 0 and port 2
» Code 8051 instructions for I/O handling
» Code I/O bit-manipulation programs for the 8051
