huffman编码压缩，内有许多压缩文件，可以自己尝试，工作环境是VxWorks，使用Tornado编译-huffman coding compression, there are a number of compressed file, you can try, work environment is VxWorks, use the Tornado compiler

vxworks开发使用指南和tornado开发环境使用指南-VxWorks Development Guide, tornado development environment user guide