51单片机上的实时操作系统RTX51程序5合一，含有信号量的使用，交通灯、电子钟等例子，并用含proteus仿真文件，非常适合对51单片机感兴趣同时想进入RTOS领域的同学-51 single-chip real-time operating system RTX51 program one that contains the example of semaphore use, traffic lights, electronic clock, and including proteus sim