this is aes algorithm

　? 　?　一个HelloWord演示-??? A demo HelloWord

操作系统试验！通过这个试验，你可以更加详细的了解的一些操作系统方面的知识！-Test operating system! Through this test, you can a more detailed understanding of some of the operating system of knowledge!

本程序演示了如何利用编写高层应用程序与USB接口通信。有必要了解主机是如何识别USB设备以及USB工作的基本原理。-demonstration of the process of how to use the preparation of high-level application program interface with the USB communication. It is necessary to understand the mainframe is how to identify and USB USB devices to the basic tenets.

线程同步机制。 互斥器的功能和临界区域很相似。区别是：Mutex所花费的时间比Critical Section多的多，但是Mutex是核心对象(Event、Semaphore也是)，可以跨进程使用，而且等待一个被锁住的Mutex可以设定TIMEOUT，不会像Critical Section那样无法得知临界区域的情况，而一直死等。-Thread synchronization mechanism. Mutex" s function and the critical region is very similar. The difference is: Mutex spent more time than the multi-Critical Section, but the Mutex is the core object (Event, Semaphore is), you can cross-process use, and has been locked waiting for a Mutex can be set to TIMEOUT, not as Critical Section did not know the critical situation in the region, for so long and so die.

本代码实现了操作系统中的司机和售票员同步问题，应用了VC中的信号灯，是我学完P、V操作后写的，希望于大家分享。-the code of the operating system and the driver and conductor of the bus synchronization, application of the VC"s appearance, I studied End P, V written after the operation, which we hope to share with you all.

I2C测试示例代码

哲学家就餐问题归纳为五个哲学家坐在一张桌子做两件事之一： 吃或思考。吃时，他们不思维，并同时观想，他们不吃。五个哲学家的圆形餐桌上坐着一大碗的面条在中心。一把叉子放在每一对相邻的哲学家，和，因此每个哲学家有一把叉子，在他的左边和一把叉子，向他的右边。由于意大利面条很难服务，用一个叉子吃，假定一个哲学家必须用两把叉子吃饭。每个哲学家可以只使用叉子在他立即左和直接权限。

操作系统小程序--银行家算法.该代码主要是针对计算机系高校学生在操作系统中有编程困难的同学而设计的，针对性教强.模拟实现银行家算法。通过编写和调试一个系统动态分配资源的简单模拟程序，观察死锁产生的条件，并采用银行家算法，有效的避免死锁.-Operating System applet- Banker" s algorithm. The code is mainly for the Department of Computer Science College Students in the operating system are designed for students with programming problems, and targeted to teach strong. Simulation and Realization of banker" s algorithm. By writing and debugging a simple system dynamic simulation program to allocate resources to observe the resulting deadlock conditions, and use of banker" s algorithm, effective to avoid deadlock.

随着社会的快速发展,生活水平的不断提高,出于对智能化技术发展要求,为用户提供方便,操作简单,快捷,可靠的服务,开发了银行帐户管理系统.-With the rapid development of society, the standard of living continues to improve, based on the requirements of the development of intelligent technology. to provide users with convenient, simple, fast, reliable service and the development of the bank account management system.

操作系统知识， 操作系统知识，-Operating system knowledge, knowledge of the operating system, operating system knowledge,