本模拟程序实现对n个进程根据优先权的高低调度的模拟，创建进程描述符PCB，进程的优先权在运行过程中动态改变，每个时间片结束后显示当前各进程的状态。-The simulation program according to the process of the n analog low priority scheduling, to create the process descr iptor PCB, dynamically change the priority of the process during operation, the display of the current state of the process after the end of each time slice.