基于优先数的时间片轮转调度算法处理器调度（方法一）-The number of time slices based on priority scheduling algorithm processor scheduling rotation (method A)

FIFO，优先数调度算法，时间片轮转调度算法的实现，经调试可运行 -the realise of FIFO, priority number of scheduling algorithms, time slice, round robin scheduling algorithm.