时间同步 VS2005环境编程,通过串口接受到时间协议的数据，同步机器的系统时间...

用MODEM实现来电显示的方法,可以针对任何内置与外置型的MODEM-with MODEM CND approach to address internal and external to any type of MODEM

双用户，包括mc-cdma的扩频，调制，加前缀，通过瑞利信道，去前缀，解调，解扩部分

《单片机通信技术与工程实践》书所附程序和例子

射频卡读卡程序,射频IC卡识别技术，通常由载有密码的射频IC卡来代替传统的键盘密码。读卡模块读出密码后，即产生输出电信号，继而驱动执行机构动作，或将密码（如卡号）送给外围对接设备（如电脑或单片机等）。采用射频卡读卡模块及感应体构成的特定系统中，因射频卡内码信号唯一且不可复制，因此射频卡不仅杜绝了非法复制密码，还为各种控制采用信息化管理创造了条件。-RF card reader procedure, radio frequency identification technology IC cards, usually containing the password from the RF IC cards to replace the traditional keyboard password. Reader module read out a password, as a result, the output signal, and then drive the implementation agency action, or passwords (such as logging) gave the external docking equipment (such as computer or microcontroller, etc.). RF card reader module consisting of sensors and the specific system, RF signal code card but not the only copy, RF Card not only prevents illegal copying passwords, but also controls the use of information management to create the conditions.

非常详细地分析了linux下串口通信的程序，有具体的方法思路以及完整的源代码。-A very detailed analysis of serial communication under linux procedures. And there is a specific way of thinking, as well as complete source code.

该程序驱动MODEM反复拨打某一个电话号码.使用了简单的AT命令,通过COM口与MODEM通讯.-the procedure repeated MODEM Driver Call a telephone number. Use a simple AT commands, through COM ports with modem communication.

at91r40008 atmel arm 7tdmi 内核的串口驱动源码-at91r40008 ATMEL arm 7tdmi kernel source Serial Driver

方便地提供xml与wbxml的转换与解析，包括不同的源码和相应的xml文件。此代码可以在Windows和LINUX系统中使用-convenient way for xml wbxml with the conversion and analysis, including different source and the corresponding xml document. This code in Windows and Linux use

通过编程计算ＲＳ编码前后通信系统的误码率可以很清楚的看到系统的编码增益．-programmed to calculate RS coding communication systems around the BER can clearly see the coding gain.