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excel sheet modification

高频变压器设计软件，很有用，是个EXCELL小软件(High-frequency transformer design software, very useful, is a small software Excel)

将PDF转换为WORD 准确率很高 很不错的一个软件 (Will be converted to WORD PDF high accuracy a very good software)

源码演示了如何读取S.M.A.R.T硬盘信息的方法，并且将读出的硬盘信息保存于一个INI文件中。(This is very simple program which communicates with the Hard drive to get the information using S.M.A.R.T. available within the hard drive. )

简单的文件管理系统,实现文件的建立，删除等操作。(The design for Operation System)

程序查询 Fat12 文件，分别对目录文件、普通文件、不存在的文件进行做相应的输出(Procedures for the Fat12 file, respectively, on the directory file, the ordinary file, the file does not exist to do the corresponding output)

基于J2EE架构的工作流引擎的分析与设计,很好的代码()

说明：  

pdf转换为tiff格式的图片，支持多页格式。(trans pdf to tiff.)

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 )