用lz77算法进行压缩，对得到的结果再使用huffman编码的方法进行压缩。分别对lz77和huffman编码的原理进行说明。 -Lz77 algorithm to compress the results obtained using huffman encoding method to compress. Lz77 and huffman encoding principle is described.

制作一寸电子版照片的具体方法描述，以及如何压缩和保存照片。-Specific method for making photo descr iption inch electronic version, as well as how to compress and store photos.