①　　设计进程控制块PCB表结构，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(First, the design process control block PCB table structure, respectively suitable for priority number scheduling algorithm and cycle round robin scheduling algorithm. Establish process ready queue. The preparation of two different algorithms into the subroutine. Two process scheduling algorithms: 1) priority number scheduling; 2) cyclic round robin scheduling)