l4d2显示身体插件

用于在前端重置NC56用户名密码，单点登录也可以(User name password for resetting NC56 at the front end)

C++ INPUT_OUTPUT using iostream in console application

修改原来的六步支付过程为一页支付.改善体验.(Modify the original payment process to pay for one page.)

倍福PLC步进电机控制程序，KL2541驱动模块，twinCAT2软件(The baby will not English, the baby is desperate)

象棋游戏，c语言版，vc6.0 gunc++ 都可以编译成功，文本模式。值得学习， 申明此代码不是我写的，是pfan里的一个版主写的昵称叫雨中飞燕。 虽说是DOS环境的，可以很容易转换到其他操作系统下。-Chess game, c language, vc6.0 gunc++ can be successfully compiled, the text mode. Worthy of study, affirms that I did not write this code，it is a product of an manage in the pfan whose nickname was called Chebi rain.

共轭梯度法（Conjugate Gradient）是介于最速下降法与牛顿法之间的一个方法，它仅需利用一阶导数信息，但克服了最速下降法收敛慢的缺点，又避免了牛顿法需要存储和计算Hesse矩阵并求逆的缺点，共轭梯度法不仅是解决大型线性方程组最有用的方法之一，也是解大型非线性最优化最有效的算法之一。 在各种优化算法中，共轭梯度法是非常重要的一种。其优点是所需存储量小，具有步收敛性，稳定性高，而且不需要任何外来参数。(The Conjugate Gradient method is a method between the steepest descent method and the Newton method. It only needs to use the first derivative information, but overcomes the shortcoming of the steepest descent method and avoids the need for the Newton method to store. And the disadvantage of calculating the Hesse matrix and inverting, the conjugate gradient method is not only one of the most useful methods for solving large linear equations, but also one of the most effective algorithms for solving large-scale nonlinear optimization. Among various optimization algorithms, the conjugate gradient method is a very important one. The advantage is that the required amount of storage is small, step convergence, high stability, and no external parameters are required.)

说明：  udp打洞通信测试 C# 编写可直接运行(UDP hole-drilling communication test C # can be written and run directly)

说明：  danish file for papers please

以前做的一个数字钟-before doing a digital clock

软件工程课件,介绍软件开发的技术,方法,原理(11-15)章-Software engineering courseware, introduction of software development techniques, methods, principles (11-15) Chapter