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3.单片机I/O口的模拟仿真I/O口是单片机的基本资源,对于常用的51内核的单片机而言,如ATMEL公司的89S(C)51或Winbond公司的W78系列单片机一般有四个双向I/O口P0～P3,这四个I/O口都是双向端口。每个端口都包括一个锁存器、一个输出驱动器和一个输入缓冲器。除作为普通I/O使用外,P
3. Microcontroller I / O port simulation I / O port is the basic resources of the microcontroller, the commonly used 51-core microcontroller, such as ATMEL’s 89S (C) 51 or Winbond’s W78 MCUs generally have four Bidirectional I / O ports P0 ~ P3, these four I / O ports are bidirectional ports. Each port includes a latch, an output driver, and an input buffer. In addition to being used as normal I / O,