[线性表]一元多项式相乘

rate range gyro balanced system control

产生两不迥频率的信号，并对两信号作复数FFT变换，找出频率为50Hz的信号对其进行能量计算(Two distant signal is not generated frequency, and two signals for complex FFT transform to identify the frequency of 50Hz signal to calculate its energy)

用vc++来编写活动窗口，代码方便简明，适合刚开始学习入门的人(With vc++ to write the active window, the code to facilitate concise, suitable for people just beginning to learn the entry)

这是一个大家都熟悉的实用技巧，用C#制作进度条功能，本代码演示了最简单，且实现方法简单的progressBar进度条用法示例， 　　单击按钮后，开始演示进度条效果，这部分代码写在按钮事件中： 　　progressBar1.Value = 0;//设置进度条的初始值 　　progressBar1.Minimum = 0;//设置progressBar1控件的Minimum值为0 　　progressBar1.Maximum = 500;//设置progressBar1的Maximum值为500 　　progressBar1.Step = 1;//设置progressBar1的增值为1 　　for (int i = 0; i < 500; i++)//调用for语句循环递增 　　{ 　　 progressBar1.PerformStep();//使用PerformStep方法按Step值递增 　　 textBox1.Text = "进度值：" + progressBar1.Value.ToString(); 　　}

利用非线性控制完成光伏并网逆变器的设计，设计中采用先进的反步法，介绍很好。(Using nonlinear control to complete the design of the photovoltaic (pv) grid inverter, adopted in the design of advanced reverse moves, the introduction is very good.)

说明：  使用单片机对蜂鸣器进行控制，要求蜂鸣器唱出《八月桂花》这首歌，简单加深对定时器的理解和蜂鸣器的应用，更深入的理解51的内部结构和使用方式。(The buzzer is controlled by single-chip computer, which requires the buzzer to sing the song "Osmanthus fragrans in August". It can simply deepen the understanding of timer and the application of buzzer, and further understand the internal structure and use mode of 51.)

roller coaster that simulating train track

希捷指令集，里边详细的介绍了希捷12代的指令等。(Seagate instruction set inside a detailed introduction of 12 generations of Seagate directives.)

说明：  多次拟合任意函数曲线，采用高斯曲线拟合算法求解拟合系数。(The fitting coefficient is obtained by fitting any function curve many times.)

VLC播放器初始化，播放rtsp文件，轮询播放(VLC player initialization, playing RTSP files, polling playback)