进程调度 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链子程序。

③编制两种进程调度算法：1）优先数调度；2）循环轮转调度

-The process of scheduling the design process control block PCB table structure (with the same structure as the experimental one), were applied to a few priority scheduling algorithm and scheduling algorithm rotation cycle. ② to establish the process ready queue. Algorithm on two different procedures for the preparation into the chain. ③ the process of the preparation of two scheduling algorithms: 1) the number of scheduling priority　2) Round-Robin Scheduling cycle