此单片机程序实现的是lcd字符显示设计，采用的是LCM161（HD44780驱动器）字符显示器，连接板子的P0.0--P0.7，采用I/O口模仿总线时序,不需要硬件扩展 -This single-chip program lcd character display design, using LCM161 (HD44780 drive) character display, the connecting plate promoter P0.0- P0.7 I/O port to mimic