Tracker_VBAT

超声波测距，可以通过串口助手显示，当小于设定值时，显示0，当大于设定值时，显示1(Ultrasonic Ranging, through serial aides showed that when less than the set value, 0, when greater than the set value, indicating a)

串口与pc机通讯，51单片机例程，只需要修改io口即可实现。(Serial communication with pc, 51 MCU routine, you only need to modify the io port can be realized.)

模拟电梯控制系统程序设计代码，用户可输入任意楼层，程序有先来先服务策略和顺便服务策略。(Elevator control system design simulation program code, the user can enter any floor, the program has first come first serve policy and the way services strategy.)

XListCtrl控件源码，一个很有用的列表扩展控件(CListCtrl control source, a useful list expansion control)

基于VC++的，以操作文件的方式（CreateFile,WirteFile,ReadFile）来操作串口实现的射频卡门禁系统，实现了包括读卡写卡，寻卡防冲突等功能。(Based VC++ in order to manipulate papers (CreateFile, WirteFile, ReadFile) to operate the serial interface of the RF card access control systems, including the realization of the card reader to write, look for cards anti-collision function.)

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

在定时器控制下反复的裁减一幅图像和改变其大小(timer under the control of the repeated cuts an image and change its size)

单片机入门推荐实验可以帮助大家快速入门，有大量代码，可供调用(experiment for 51MCU)

VS2010 C++学习（6）：ListCtrl用法及ADO方式读写Access程序(VS2010 C++ learning (6): ListCtrl Usage and Access ADO literacy program)

利尔达 MSP430F5438学习板全套资料(LSD the MSP430F5438 learning board full set of information)