双卡双待带蓝牙功能手机，可以给朋友参考，值得一看

通信电路课程设计计划-courses communication circuit design plan

VC++发送带附件邮件程序，使用base64编码，能够实现收发自如，资源消耗小，可以传输文字，图片，附件， 接口已经全部封装好，使用非常方便，欢迎大家参考

本程序是对分数阶傅里叶变换的参数估计，对于初学者有很大帮助，并附带分数阶傅里叶变换的源程序，已验证正确，希望对学习FRFT的人有一定的帮助，希望自院可以互相分享。

因特殊的业务需要，某些电话交流需要在第三方的监视下进行，假定某电话交流由甲乙丙三方发起，丙为监听控制方，当甲开始说话时，丙可以不允许乙听，并且开始录音，当甲说完时，丙确定是否可以让乙听，如可以。给乙放录音，当乙说话时，重复以上操作。-because of special operational needs, some telephone exchanges in the surveillance of third parties under the assumption that a telephone exchange was launched by the tripartite B, and C to monitor the controlling party, began to speak when the A, B C can not listen, and began recording at the end when A and C to determine whether or not they can B listen, if we can. B recordings to release, when the B words, to repeat the operation.

和MODEM通讯,VB-And MODEM communications, VB

data control exchange transfert

最简单的VC编写的OPC客户端程序，本程序为OPC异步多组型传输。-The simplest VC prepared OPC client program, the procedures for the OPC-based asynchronous multi-group transmission.

一个串口通讯程序。可以嵌入到你的应用程序中。-a serial communication program. You can be embedded into the application process.

简单的聊天程序，初学者可以看看，高手勿进！-simple chat program, beginners can see, not masters!

LAPB协议的实现源码，是x.25的基础。也可以作为LAPM纠错协议的参考-LAPB protocol implemented source is the basis of X.25. LAPM also can be used as a reference FEC agreement