网络选课模拟程序，由client和server两部分组成，client和server之间的通信基于TCP协议，并且实现NCSP应用层协议-network simulation process from the client and the server is composed of two parts, client and server-based communications between the TCP and to achieve the NCSP application layer

模拟Tcp协议的传输过程，为经典JAVA代码-Tcp protocol transmission process simulation

模拟ATM服务器与客户端,主要用的TCP——SOCKET技术实现简单的程序通讯-ATM simulation server and client, the main use of TCP- SOCKET communications technology to achieve simple program