RC-522+S50+038+12864刷卡程序

C#操作USB摄像头，显示图像在视频窗口中(CSharp operator camera)

objectC alert的重写，可改变背景颜色，可用图片设置背景等(Object C)

说明：  通过修改，注册表，实现修改默认打印机功能(it is used to modify the setting of the defualted printer )

哈夫曼编码译码系统，设置发送者和接受者两个功能， 发送者的功能包括： ①输入待传送的字符信息； ②统计字符信息中出现的字符种类数和各字符出现的次数（频率）； ②根据字符的种类数和各自出现的次数建立哈夫曼树； ③利用以上哈夫曼树求出各字符的哈夫曼编码； ④将字符信息转换成对应的编码信息进行传送。 接受者的功能包括： ①接收发送者传送来的编码信息； ②利用上述哈夫曼树对编码信息进行翻译，即将编码信息还原成发送前的字符信息。 (Huffman decoding system, set the sender and the recipient of two functions, the sender' s features include: (1) input to be transmitted character information ② statistical character information, the number of types of characters and characters the number of occurrences (frequency create a Huffman tree) ② According to the number of types of characters and their respective number of occurrences ③ use the Huffman tree to find the characters Huffman coding ④ character information into the corresponding coding information for delivery. The recipient of the features include: (1) to receive the coded information to the sender transmission ② above Huffman tree coded information to be translated, is about to coded information to restore the character information before sending.)

通过GDAL读取常用遥感影像，如img，tiff，可实现读取显示和雷达影像处理的一些基本算法(Read through GDAL common remote sensing images, such as img, tiff, read the display and radar can achieve some of the basic image processing algorithms)

ArcGIS EngineGIS开发介绍(ArcGIS EngineGIS)

    此代码能实现按键对数码管的控制，和各种状态切换，数码管有9个用到7个其中两个暂时还没用到。按键11个。定时器对数码管时间显示计时，按键实现数码管的加减，其中包括短按按键加减1，长按加减10的功能。设置完之后按下开始按键实现计时，按下停止按键实现数码管显示的数停止计时。停止按键有三种或者两种状态切换，停止，回复设定的值，以及清零。

一个用Visal C++编写的俄罗斯方块小程序。(A used Visal C++ Prepared Tetris applet.)

nelder-mead算法,程序不算太长，应该好理解，仔细看几遍就行了(nelder-mead method， it is very useful if you want it,just download it!)

STM8L151的SI4463/SI4438的驱动程序，433MHz、915MHz都可以适用，晶振26MHz。