操作系统课程的进程调度模拟程序实现，进程在三种状态ready、finish、run之间切换，运行一个时间片其优先级降低1，所需运行时间降低1.-Course of the operating system process scheduling simulation program, the process in the three states ready, finish the run switch between running a time slice priority to reduce a required run time is reduced by 1.