A demo of using socket communication

一个关于语音电话的程序- About pronunciation telephone procedure

USB总线与429总线数据转换的USB端（基于PDIUSBD12）的WDM驱动程序-USB bus with 429 data conversion USB terminal (based on PDIUSBD12) WDM

抱歉，传错了，sh2_1_jt是fm的解调，现在上传的才是AM解调。-sorry-wrong, sh2_1_jt fm is the demodulator, is now uploaded AM demodulation.

低端交换机典型配置实例V1.30 希望新手快速上手-Typical configuration examples of low-end switches hope novice Quick v1.30

ISUP消息中rel原因值 G3.1正常类别 原因NO.1：未分配的（未确定的）号码 "unassigned (unallocaled) number" 该原因表示不能到达主叫用户所请求的终点，因为虽然号码格式有效，但该号码目前尚未分配（未确定）。 原因NO.2：无路由到达规定的转换网络（国内使用） "no route to specified transit network(nationaluse)"-ISUP message rel normal categories of reasons for the value of G3.1 reasons NO.1: unallocated (unspecified) number of

中文RFC文件，无需翻译，对学习很有帮助！

另一个牛人写的uart的通信程序，做过了很多的改动。-written by a UART communication procedures, and has done a lot of changes.

USB基本知识,自己整理，好用，适合新手-USB basic knowledge, their collation and ease of use for novice

zigbee 的说明，编程指南，相信会有很大帮助-Note zigbee, programming guide, I believe would be of considerable help

基于stm32开发平台的can总线通信，文件里有发送和接收源代码，适合学习stm32和can总线通信的朋友参考