说明：  1）设计有5个进程并发执行的模拟调度程序，每个程序由一个PCB表示。 2）模拟调度程序可任选两种调度算法之一实现（有能力的同学可同时实现两个调度算法）。 3）程序执行中应能在屏幕上显示出各进程的状态变化，以便于观察调度的整个过程。
(1) the design of five concurrent implementation of the simulation process scheduler, each process by a PCB said. 2) simulation scheduler can choose one of two scheduling algorithms to achieve (the ability of students can simultaneously achieve the two scheduling algorithms). 3) procedures for implementation should be able to on the screen shows the status of the process of change, in order to observe the entire process of scheduling.)