os_xiti3

操作系统提供一系列服务： 多任务、用户界面、内存管理、内存保护、 文件存取、网络、设备控制、硬件控制 、错误检测及恢复系统、安全(The operating system provides a range of services: Multitasking, user interface, memory management, memory protection, File access, network, device control, hardware control, error detection and recovery systems, security)

说明：  labview2018做的密码，主要实现控制系统登录，可以注册账号修改密码，密码成功进入主程序。(The password made by labview2018 is mainly used to log in the control system. You can register an account to change the password. The password successfully enters the main program.)

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.)

UG开发代码,开发型材的代码,UG对话框的源文件,可以参考(UG)

重庆大学软件学院操作系统实验二，线程及其调度，实现并行排序，并用图形界面表示(operating system test 2，thread scheduling and realize the parallel sorting showing as a graphical interface)

自己动手写操作系统，小练习包括fifo.cfork.cpopen.c等，保护模式，超过1M内存管理模式，等代码，生成的中间文件等，适合初学者参考！(Do-it-yourself write operation system, small exercises include fifo. C fork. C popen. C, and other protection mode, more than 1 M memory management mode, and the code, generation of the middle of the documents, etc, and is suitable for beginners reference )

模拟段式存储管理的分配与回收，能够输入给定的内存大小，进程的个数，每个进程的段数及段大小；当某进程提出申请空间的大小后，显示能否满足申请，以及为该进程分配资源后有关内存空间使用的情况。 (Analog-stage distribution of storage management and recovery, be able to enter a given memory size, number of processes, each process segment number and segment size when a space the size of the application process, the show can meet the application, as well as the The process, after the allocation of resources relating to the use of memory space.)

HPA就是host protect area(HPA is the host protect area)

一份用通俗易懂的语言简述操作系统的文档，内容非常适合初学者(A brief plain language operating system s documentation, the content is very suitable for beginners)

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.)