PC到电话

Unix编程常见问题解答-Unix programming FAQ

很不错的UNIX内幕介绍，很值得一看！（分成32个文档）-very good UNIX insider, is an eye-catcher! (Divided into 32 files)

领航政治考前最后预测-resembling final forecast

ITU-语音编码技术文档G.725-ITU-Speech Coding technical documentation G.725

2003系统分析员的资料-2003 information systems analyst

编译原理四元式，十分好用，运行好使   来自 李涛四元式

代理服务器的源程序代码-Proxy Server source code

GPRS(General Packet Radio Service)是通用分组无线业务的简称。GPRS是GSM Phase2.1规范实现的内容之一，能提供比现有GSM网9.6kbit/s更高的数据率。GPRS采用与GSM 相同的频段、频带宽度、突发结构、无线调制标准、跳频规则以及相同的TDMA帧结构。因此，在GSM系统的基础上构建GPRS系统时，GSM系统中的绝大部分部件都不需要作硬件改动，只需作软件升级。-GPRS (General Packet Radio Service) is a General Packet Radio Service abbreviation. GPRS GSM Phase2.1 norms to achieve one of the elements that can provide more than the existing GSM network 9.6kbit/s higher data rate. GSM and GPRS using the same frequency and bandwidth, unexpected structure, the wireless standard modulation, frequency hopping and the same rules TDMA frame structure. Therefore, in the GSM system builds on the GPRS system, the GSM system of most components do not need to make hardware changes, only for software upgrades.

操作系统课程设计实验参考-experimental courses on operating system design reference

网络安全方面的书，很不错，我从事过嵌入式Linux和网络方面的研究