89c51para通信集

485通信程序 对主机从机通信协议规定其通信方式 对帧的传送有严格定义-Communication program on the host 485 communication from the communication protocol provides for the transmission of the frame there is a strict definition of

图形学B样条曲线代码-graphics B-spline curves 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.

Addison Wesley - Exceptional C++ Style. 40 New Engineering Puzzles, Programming Problems and Solutions - Herb Sutter-Addison Wesley- Exceptional C++ Style. 40 New Engineering Puzzles, Programming Problems and Solutions- Herb Sutter

安全防范Linux嗅探器-safety precautions Linux Sniffer

该代码实现网络中图象的采集和发送-The code to achieve the network to collect and send images

gdal ORG 库矢量数据读取的例子代码，对初学org库的朋友有很大的帮助-gdal ORG library to read examples of vector data code, for beginner Friend org library has a great help

VC编写的多功能对话窗-VC prepared multifunctional dialogue window

AD813规格书，英文版本，需要用的设计师们快来下吧-data sheet