各种滤波器的设计方法，包括直接型、移位型、分布式滤波器设计。各类滤波器设计概括总结

晶体管的型号命名，材料分类，结构，识别方法，使用方法。-Transistor model name, material classification, structure, identification methods, the use of methods.

i hope useful for all student thanks

与Casio BOSS进行串口通讯的程序 -Serial communication with Casio BO

用VC++6.0的Sockets API实现一个聊天室程序,是使用socket编程的很好的一个文档.-VC 6.0 Sockets API a chat room procedures, the use of socket programming is a good one document.

RFC3025：移动IP供应商/组织特定扩展

卷积编码的源代码，可以用于移动通信信道编 码-the source code can be used in mobile communications channel coding

经典CDMA教材，强烈推荐，学习通讯的一定要下，不可不看-classic CDMA materials, and strongly recommended that the study of communications must, we should not see.

这个文档详细讲解了在单片机上实现控制GSM模块的格式，对于开发远程通信系统的人员很有用-This document gave a detailed account in single-chip GSM module to achieve control over the format of the remote communication system for the development of personnel is useful

coridic的VHDL愿程序已经在AITIVEHDL中仿真通过-coridic VHDL is willing to have procedures in the simulation through AITIVEHDL

1.目录TCP.IP终端程序源代码是一个实现一个TCP.UDP终端的程序，通过该终端可以实现POP3、SMTP、FTP等各种功能； 2.目录超级链接是一个能够在窗体上实现超级链接的程序，或者发送email； 3.目录端口扫描是一个能够对指定IP地址的单个端口或者多个端口进行扫描的程序； 4.目录获得本机ip地址的MFC程序是一个通过MFC来获取本地计算机IP地址的程序。 5.目录获取网络设置，网卡信息是一个获取网络DNS、子网掩码、网卡地址的综合程序，6.EnumProtocal目录是获取系统支持的网络协议信息的程序。-1. Contents TCP.IP terminal program source code is a realization of a TCP.UDP terminal procedures, the terminal can be achieved POP3, SMTP, FTP and other functions; 2. Directory is a hyperlink to achieve in the form of hyperlinks procedures, or send email; 3. directory is a port scan to be able to specify the IP addresses of individual ports or multiple port scanning procedures; 4. access to the directory for ip address MFC process is an MFC to obtain through local computer IP address procedures. 5. Directory access network configuration, network card, access to information is a DNS network, subnet mask, Ethernet addresses the comprehensive procedures 6.EnumProtocal directory access system to support the network protocol inform