Operating system console procedures

操作系统SCAN算法源码思想，希望有识之士可以棒改进一下，大家受益受益-SCAN algorithm source operating systems thinking, I hope people can stick to improve the look, we all benefit from the benefit

通过研究Linux的线程机制和信号量实现读者写者(Reader-Writer)问题并发控制。 1)写-写互斥：不能有两个写者同时进行写操作； 2）读-写互斥：不能同时有一个线程在读，而另一个线程在写； 3）读-读允许：可以有一个或多个读者在读； 4）读者优先的附加限制：如果读者申请进行读操作时已有另一个读者正在进行读操作，则该读者可直接开始读操作； 5）写者优先的附加限制：如果一个读者申请进行读操作时已有另一个写者在等待访问共享资源，则该读者必须等到没有写者处于等待状态后才能开始读操作。 -By studying the Linux thread mechanism and semaphores realize readers who write (Reader-Writer) the issue of concurrency control. 1) to write- write mutex: Can not write at the same time there are two write operations 2) read- write mutex: Can not have a thread at the same time in reading and writing another thread 3) Reading- Reading of permit: can have one or more readers read 4) the priority of additional restrictions readers: If the readers apply for a read operation, there was another reader being read, the reader can be directly started reading operation 5) to write additional priority Restrictions: If an application for a reader reading write operation has been in waiting for another visit to a shared resource, the read

按钮种类，可以看到各种各样的颜色，还可以透明-Button type, we can see a variety of colors, can also be transparent

MAC oSC下cocoa framwork 编程示例程序，基于Xcode-MAC oSC programming examples under cocoa framwork procedures, based on Xcode

Microsoft MS-DOS6.0 完整源代码，包括所有外部命令，安装程序，DOSSHELL等。每个源文件均包括开发历史、更新说明、注释。这样一套源码对你的意义，实在无法以笔墨形容-Microsoft the MS-DOS6.0 complete source code, including all external commands, the installation procedure, DOSSHELL and so on. Each source document includes the development history, the renewal explanation, the annotation. This kind of set of sources code to your significance, really is unable to the words to describe

潘千嬅I602硬件资源的XPE文件，可以直接生成成XPE

能够动态显示cpu工作频率的软件源代码，正常工作在linux2.6内核下-Able to dynamically display the cpu frequency of the software source code, the normal work in the kernel linux2.6

能读取/更改Nvidia显卡pll时钟信息,实现软超频的linux下源程序。-Can read/change the Nvidia graphics pll clock information, realize soft overclocking under linux source.

、课设内容及步骤 1. 消化课设算法思想及样本程序 给出对应模块（函数）的流程图 2. 编制 建立、删除、打开、关闭、读、写 函数 3. 准备调试数据（至少两个用户，若干文件），能实施多个命令操作 4. 上机编辑、编译源程序，并进行调试 5. 利用准备好的调试数据，运行测试程序， 观察运行结果，并作记录和分析 -, Class-based content and Step 1. Digest algorithm based lesson ideas and sample program are given the corresponding module (function) of the flow chart 2. Prepared to establish, delete, open, closed, read, write, function 3. Ready debugging data (at least two users, a number of documents), to implement a number of commands to operate 4. on the machine to edit, compile source code, and debugging 5. preparation good use of debugging data, run test procedures, observing the results, and for recording and analysis

用c编写的成绩管理系统，包括成绩统计，添加，修改，删除，以及实现了图形化界面-C prepared with performance management systems, including performance statistics, add, modify, delete, and realize the graphical interface