在达盛实验箱下的lcd单片机显示，两行国标汉字，爱好者可以好好学习一下-Tat Shing lcd under experimental single-chip boxes show two lines of Chinese characters GB, fans can learn about

交通信号灯课程设计 微机原理 8255 8086-Traffic lights curriculum design Microcomputer Principle 8255 8086

8255的A口作为输入口，与逻辑电平开关K7～K8相连。8255的B口作为输出口，与发光二极管LED7～LED8相连。编写程序，使得逻辑电平开关的变化在发光二极管上显示出来。即当开关k7（或K8）置于L时,对应发光二极管LED7（或LED8）点亮；置于H时熄灭(The 8255 A port is used as the input port and is connected with the logic level switch K7 - K8. The 8255 B port is used