inherited type of exercises

使用起来非常方便，小波包分析提取振动信号中的特征频率，FIR 底通和带通滤波器和IIR 底通和带通滤波器。( Very convenient to use, Wavelet packet analysis to extract vibration signal characteristic frequency, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter.)

说明：  一款基于C51单片机和霍尔元件的金属探测器(A Metal Detector Based on C51 Single Chip Microcomputer and Hall Element)

flash采集摄像头拍照、截图、上传功能，可直接使用，网页的。

keil mdk 5.23 搭建arm9 编译环境，方便用户用ide 来开发arm9裸机程序，节省工程实践。裸机的开发为uboot的学习更方便

matlab没有提供画椭圆的函数，该函数在获得椭圆中心 长轴轴 短轴后进行画椭圆，其中使用复变函数(did not draw an ellipse matlab function, the function in the long axis of the axis minor axis of the ellipse center painted oval, which use the complex function)

H file for stm32f10x

绘制不规则图形 如 圆和弧线的绘制 利用GDI函数(Draw irregular shapes such as circles and arcs drawn using GDI functions)

说明：  中国水利水电出版社出版的书籍《Csharp专业项目实例开发》配套的源代码 (China Water Conservancy and Hydropower published books "Csharp examples of professional development project" complementary source code)

一个用C#做的OPC客户端例子，很好的学习参考(Using C# to do an OPC client example of good learning reference)

8051 1Khz sine wave generator. make use of DAC0808 and timer 0 interrupt. Also single led is blinked continuously.