编写程序控制8255A可编程并行接口芯片，使实验台上的红、绿、黄发光二极管按照十字路口交通信号灯的规律交替发光。当按下任意键则停止运行，返回DOS。-preparation process control 8255A programmable parallel interface chip, lab tables in red, green, Huang LED traffic lights in accordance with the crossroads of the law turn lu

交通信号灯的倒计时操作，以及温度提示功能，时间可设定-Countdown traffic signal operation, and temperature prompts, time can be set

智能交通信号灯的设计与仿真，以及紧急状况的处理，行人通行按钮-I am pig I am a superman

TM4C基础学习实验，交通信号灯控制编程实验-TM4C based learning experiments, traffic signal control programming experiment