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直流降压变换器设计，仿真时间0.05s，算法ode15(DC step-down converter design, simulation time 0.05s, algorithm ode15)

说明：  均匀线阵、圆阵、平面阵，结合空间谱估计方便理解(Uniform linear array, circular array, plane array, combined with spatial spectrum estimation is easy to understand)

一个Delphi进度条动画效果类，使用这个类可在窗体中快速生成一个带动画效果的进度条，蓝色风格，十分漂亮，如演示效果所示。这个源码中还包括了生成Delphi右键弹出菜单的代码，这个也是很有参考价值的，特别是对Delphi新手来说。

玩双色球的过程中，无论把33个红色备选号码球怎样划分区间，总会时不时地有某个区间不出号（即所谓的断号或断档）。如果我们在选号时，能够把不出号的区间排除在我们选号范围之外，就会大大缩小选号的范围，增加中奖的机会。 -Loans play the process, regardless of the number 33 red balls what division options range from time to time there will always see a certain number range (the so-called off or断档).选号If we can not issue the interval excluded from the scope of our选号, it will greatly narrow the scope of选号to increase the chance of winning.

学生考勤统计软件，请大家指点 -Student attendance statistical software, please instruct the U.S.

使用java开发的俄罗斯方块游戏（java版），感觉还行。-Russian square game (Java edition),

用扩展卡尔曼滤波器跟踪一个平面滤波目标，功能齐全，可直接运行(An extended Kalman filter is used to track a planar filtering target)

说明：  一个很好的demo,可以学习到很多的基础编程技巧,期待大家的学习成果!(A good demo, you can learn a lot of basic programming skills, look forward to your learning results!)

说明：  采用matlab多项式拟合数据，可以方便的设置拟合阶数，方便的的获得多项的系数(Using matlab polynomial to fit the data, you can easily set the order of fitting and easily obtain the coefficients of multiple items)

说明：  用labview编写的基于队列的生产者/消费者模式演示(Labview write with queue-based producer/consumer model demonstration)