drill

将空气质量指数转化为污染物浓度（二氧化硫，二氧化氮和颗粒物浓度）的小程序(convert API to concentration)

第一：将文件拷到c:windowssystem32第二：运行install，这样就注册好了(This file contains important installation and general information for Version 8.0.2 of the CEintegrated product set.)

对EXCEL的操作，数据的添加、删除、读写等(right EXCEL operation, the data to add, delete, read and write, etc.)

首先通过文件操作，读取文件内容，把字符逐个提取后统计字符频率，建立哈夫曼树和进行哈夫曼编码，当然这是根据ASCII编码来将字符转换为二进制，然后实现前缀编码，然后把编码后的使用二进制流写入相应文件(First through file operations, read the file content, the characters one by one after extracting character frequency statistics, establish a Huffman tree and Huffman encoding, and, of course, this is according to ASCII code to convert characters to the binary, then realize the prefix encoding, and then the encoded using binary stream into the corresponding files )

获取应用程序版本信息，并写到指字的文件里......(Get application version information, and writes the word refers to the file ......)

This file contains a summary of what you will find in each of the files that make up your Sort2 application.

Encryption and Decryption of files are streamlined to RSA, KS1 and KS2 formats

利用C++中CreatePolygonRgn,CreateRoundRectRgn,CreateRoundRectRgn,()

用vb做的一个能显示wave文件的波形，适合于初学者(Done with vb a wave file can display the waveform, suitable for beginners)

文件操作 以二进制格式读写文件 数据保存打开类型 (File operations data read and write files in binary format to save the open type)