MCS-51单片机的并行I/O端口的结构及功能

I/O Parallel Port of MCS-51 Single-chip's Structures and Function

详细分析了 MCS- 5 1单片机的 P0、P1、P2、P3并行 I/ O端口的结构与功能 ,及其使用时的注意事项 ,为单片机设计研发人员提供了严格的理论基础。

This paper analyses P0,P1,P2,P3 parallel port of MCS-51 single-chip microcomputer,including their structures,principles,function and noticeable items,which are provided academic foundation to single-chip researchers and developers.