a.c

一个虚拟DOS操作界面的小系统，一共有9条命令，可以在里面增加命令实现更多功能。(A virtual DOS interface small system, a total of 9 orders, which increased in order to achieve more.)

说明：  这是一个操作系统中关于调度问题中的先来先服务调度算法。(This is an operating system on the scheduling of a first-come first-served scheduling.)

作业调度程序，模拟操作系统的作业调度过程，协调和控制各个作业对cpu的使用控制(Job scheduling program to simulate the process of the operating system job scheduling, coordinating and controlling the use of control operations on cpu)

1）设计一程序，由一个进程创建三个子进程，三个子进程一个是生产者进程，两个是消费者进程。 2）父子进程都使用父进程创建的共享存储区进行通信，由生产者进程将一个数组中的十个数值发送到由5个缓冲区组成的共享内存中。? 3）两个消费者进程轮流接收并输出这十个数值，同时将两个消费者进程读出的数值进行累加求各和。 4）考虑生产者进程生产的速度和消费者进程速度。(1) a program is designed to create three sub processes from one process, three sub processes is the producer process, and the two is the consumer process. 2) the father child process communicates with the shared storage area created by the parent process, and sends ten values in one array to the shared memory composed of 5 buffers by the producer process. L 3) the two consumer processes take turns to receive and output the ten values, and add values to each of the two consumer processes. 4) take into account the production speed of the producer process and the speed of the consumer process.)

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)

简单的文件系统试验源代码，可用于操作系统的大型实验~~(Simple test source code of the file system, the operating system can be used for large-scale experiments to ~)

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)

广东工业大学计算机学院操作系统4源代码 (Guangdong University of Computer Science 4 source code operating system)

磁盘文件系统：建立基于磁盘存储设备的UNIX文件系统，在windows系统下模拟UNIX文件管理系统，可用命令行进行基本的文件操作。(Disk file system: the UNIX file system based disk storage devices in the windows system simulation UNIX file management system, basic file operations available command line.)

FIFO和LRU页面置换算法，使用c++写的，有功能号，可以选择功能，进行相应的操作！(FIFO and LRU page replacement algorithm, using c++ written in the functional number, you can choose functions to carry out the appropriate action!)