FCFS

操作系统作业源代码，方便学习操作系统课程的同学使用 (this is the codes for students who learn computer system.)

1、 ：编写并调试一个模拟的进程调度程序，采用“最高优先数优先”调度算法对进程进行调度。 “最高优先数优先调度算法的基本思想是把CPU分配给就绪队列中优先数最高的进程。尝试静态优先数与动态优先数两种方法： a) 静态优先数是指优先数在整个进程运行期间不再改变。优先数可以在数据输入时指定，也可以根据到达顺序、运行时间确定。 b) 动态优先数是指进程的优先数在创建进程时可以给定一个初始值，并且可以按一定原则修改优先数。例如进程获得一次CPU后就将其优先数减少1。或者进程等待的时间超过某一时限时增加其优先数的值。 2、 编写并调试一个模拟的进程调度程序，模拟实现多级反馈队列调度算法。 3、 编写并调试一个模拟的进程调度程序，模拟实现最低松弛度优先算法。 4、 程序与报告要求： a) 对上述要求1、2、3，至少要完成一项，鼓励尝试多种算法。 b) 输出结果要尽量详细清晰，能够反映调度后队列变化，PCB内部变化。 c) 可以选择在Windows或Linux环境下编写、运行程序 d) 鼓励使用不同的开发工具在不同平台环境上进行开发比较。 e) 在实验报告中，一方面可以对实验结果进行分析，一方面可以对各种算法进行比较，分析它们的优劣，说明各种算法适用于哪些情况下的调度。 (1 : Prepare a simulation and debugging process scheduling procedures, "Priority number of the highest priority" to the process of scheduling algorithms for scheduling. "Highest priority priority scheduling algorithm for the basic idea is to place the CPU allocated to the priority queue highest process. Taste Examination several static and dynamic priority priority number two methods : a) static priority number is priority number in operation during the entire process will not change. priority number in the designated input data, can be reached under the order, running time determine. b) dynamic priority number refers to several priorities for the process of the creation process can be given an initial value, and according to the principle of amending certain priority number.)

操作系统学习中的模拟CUP如何调度外部进程的算法—优先度调用算法(Analog CUP in the operating system, learn how to schedule external process algorithm- priority call algorithm)

这个程序是模拟采用二级目录结构的磁盘文件系统中的文件操作，它可以实现对文件的一些基本管理，如：读、写、删除文件等。通过这个程序可掌握文件子系统的原理，加深对二级目录结构的文件系统中用户管理、文件管理、目录管理的理解，并用程序实现对文件子系统的模拟。(the procedure is simulated using two disk directory structure of the file system file manipulation, it can be achieved on some basic document management, such as : read, write, delete files. Through this procedure can grasp the principle document subsystems to enhance the structure of the two file system user management, document management, directory management, understanding, and the procedures to achieve the right documents subsystem simulation.)

可以控制标签的各种状态，包括大小，字体等等，只要你能想到(Can control a variety of status labels, including size, fonts, etc., as long as you can think of)

制冷专业软件，非常实用，可计算制冷系统，制冷剂的物性(Refrigeration professional software is very useful, computable refrigeration system, refrigerant properties)

这是一个进程调度问题~~~~还是有很多的问题哦(This is a process of scheduling problem ~ ~ ~ ~ still has many problems Oh)

页面置换算法的模拟实现及命中率对比.通过模拟实现几种基本页面置换的算法，了解虚拟存储技术的特点(Simulation of page replacement algorithm, and the hit rate compared to several basic page replacement algorithm through simulation to understand the characteristics of virtual storage technology)

说明：  这是操作系统中调度算法中时间片轮转算法完成后的实践报告(This is the operating system scheduling algorithm in the time slice cycle after the completion of practice report)

模拟操作系统进程调度的算法采用时间片轮转法和优先权法(operating system simulation process scheduling algorithm-time Web-law and law priority)