说明：  1、设计进程控制块PCB表结构（与实验一的结构相同），分别适用于优先数调度算法和循环轮转调度算法。 2、建立进程就绪队列。对两种不同算法编制入队子程序。 3、编制两种进程调度算法：1）优先数调度；2）循环轮转调度
(1, the design process control block PCB table structure (same structure with the experimental one), applicable to the number of priority scheduling algorithm and the cycle of rotation scheduling algorithm. 2, establishing the process ready queue. The preparation of two different algorithms into the team routines. 3, the preparation of two kinds of process scheduling algorithm: 1) the number of priority scheduling 2) Cycle Cycle Scheduling)