ns2的ppt教程 通过一个实例教你学ns2仿真-Means ppt Guide through the example of a school to teach you Probabilistic Simulation

winline公司的sip ppt教程，介绍sip的基本概念以及如何建立基本回话

RS232 教程ppt,包含入门知识，设计指导，编程调试等

用java开发的soket聊天程序，有3个soket工程，其中第3个有swing和dos之分，还有2个ppt教程！-With the java chat program developed soket, there are three soket project, the first of which three are swing and the dos of the points, there are 2 ppt tutorial!