音频频率

利用MFC对Excel文件进行路径显示，写入，读取，更改，保存等操作 (Using MFC to read the Excel file, write, change, save and other operations)

一个用c#编写的软件，能够实现字符串、ascii码和Unicode码之间的转换；10进制，2进制、16进制之间的转换；字符穿的MD5加密算法的实现，对于C#的初学者也许会有帮助~-A used c# Preparation software, be able to realize the string, ascii code and code conversion between Unicode 10 M, 2 M, 16 M-ary conversion between characters wear the MD5 encryption algorithm, for C23 ! the beginner may be helpful ~

OV7620的摄像头   用K60作为控制板，DMA进行传送 节约内存 方便应用 图像及时性高  

说明：  使用Visual Studio2017/2019编写的数据结构内部算法工程(Internal Algorithmic Engineering of Data Structure Written by Visual Studio 2017/2019)

先进PID控制及MATLAB仿真程序，第er章的经过运行，全都成功(Advanced PID control and MATLAB simulation program, the first chapter after running er, all successfully)

用C语言实现小游戏贪吃蛇，此文件是贪吃蛇游戏的设计报告，包含源代码以及设计步骤(Use C language to realize small game Snake)

说明：  WIO GPS Board是一款兼容Arduino的开发板，可帮助您跟踪地球上任何移动的物体。通过将GSM和GPRS以及GPS和北斗集成在一块电路板中，它为您的室外物联网项目提供了一体化解决方案。 本工程是基于MC20和arduino开发的实时GPS定位器，实时获取当前GPS位置信息，并通过SMS短信发送到预设的手机号码上。(WIO GPS Board is an Arduino compatible development board that helps you to track any moving things on the planet. By integrating GSM&GPRS as well as GPS&BeiDou in one board, it provides an all-in-one solution for your out-door IoT project.)

说明：  一个解决除法溢出的例子，可以学习到很多，注释很详细(A solution to the division overflow example, you can learn a lot, very detailed notes)

图像去雾c++版源代码，实现效果还不错，可直接运行。(Fog to remove the c++ version of the source code, the effect is not bad, can be run directly.)

在Linux下用tcp实现ls命令的实现、下载和上传文件。(Using TCP to implement LS command, download and upload files under Linux.)