简单的QQ通信，有个简单的页面，两方可以互发消息-Simple QQ communication, have a simple page, the two sides can send each other news

采用virtools编程实现的一个联机例子，可以实现客户端与服务器端的通信。-Programming using an online virtools example, can achieve client and server-side communication.

利用哈夫曼编码进行通信可以大大提高信道利用率，缩短信息传输时间，降低传输成本，试设计一个哈夫曼编码系统-Huffman coding communication can greatly improve the channel utilization, shorten the time of transmission of information to reduce the transmission cost, try to design a Huffman coding system