人脸识别

调试，是让所有OI选手头疼的一件事情。这套资料深入浅出，详细充实，提供了大量切实可行的编程技巧，是全网最好的OI调试指导资料之一。现公开分享，以宴飨各位OI选手。(Debugging is a headache for all OI players. This set of data is simple, detailed, and provides a large number of practical programming skills. It is one of the best OI debugging guidance materials in the whole network. Now share it publicly to feast all OI players.)

模仿微信打飞机 的Demo 无bug 希望大家一起学习

说明：  利用压电超声导波时间反转法的管道结构裂纹监测研究(Study on the Crack Monitoring of Pipeline Structures Using Piezoelectric Ultrasonic Guided Wave Time Reversal Method)

本代码采用51单片机通过ADS1247采集PT100温度值，并可设定加热值，通过PID算法调节可控硅控制220V加热器控制温度，代码亲测可用；编译平台为keil4，单片机为stc89c52；

利用C#建立treeView, 实现多级目录显示（table of contents）

发送邮件的小程序-small programs

第6章 设备描述表和图形对象CPaintDCDemoCPaintDCDemo.rar,很不错的vc源码，有兴趣的朋友可以看看。(Chapter 6 describes the tables and graphics device object CPaintDCDemo CPaintDCDemo.rar, very good vc source, interested friends can see.)

STM32F4 实现的鼠标和键盘程序，修改就可以直接用了(STM32F4 achieve the mouse and keyboard procedures, modify IT and then you can use it directly.)

说明：  基于STM32F103RC单片机的,BLDCM的三相六状态控制算法.可以实现无速度传感器控制. 无传感器控制算法采用端电压检测法 采用Keil建立工程文档. 适用于57BL02型号的BLDCM,需要根据电机型号修改参数.(Based on STM32F103RC MCU, BLDCM three-phase six-state control algorithm is realized speed sensorless control. Sensorless Control Algorithms Using Terminal Voltage Detection Keil is used to establish engineering documents. BLDCM is suitable for 57BL02 model. It needs to modify the parameters according to the motor model.)

通用stm32f103vct6 ，485通讯程序，包括通讯协议(General purpose STM32 485 communications)