进程管理系统：定义PCB的数据结构，用链表的形式管理进程，采用多级反馈队列调度的算法模拟进程的控制，最终完成有创建、撤销、调度、阻塞、唤醒进程等功能-Process Management Systems: Define the PCB data structure, with the form of chain management processes, the use of multi-level feedback queue scheduling algorithm simulation process control, and ultimately complete a creation, revocation, scheduling, blocking, wake up the process and other functions