test

实现串口通信 可以收发数据 可以是数字也可以是ASCII(Serial communication)

modbus_com 通讯功能，包括PLC程序(modbus_com communication project,include PLC program)

说明：  VB写的通过串口与考勤机连接通讯的程序,便于工作查看，调试。(VB written through the serial port and Attendance Machine Connection Communication Procedures, easy to see the work, debugging.)

OPNET软件自带的General Tutorial中文译版，学习OPNET非常实用!(OPNET software s own version of Chinese Translation General Tutorial, learning OPNET very useful!)

用VB编写的串口调试助手，附带51程序，大家可以学习，很经典，很地道(With VB serial debugging assistant, with 51 programs)

VC （MODBUS协议）上位机程序VC （MODBUS协议）上位机程序(VC （MODBUS）)

一个串口通讯的源码，自定义的通讯协议，与切纸设备连接(A serial communications source, since the definition of communication protocols, and cutting equipment to connect)

vb编写的自动更新程序，可用来定期检查更新。(vb prepared by the automatic update program can be used to periodically check for updates)

MFC写的2个程序，通过socket通信，上下位机的。上位机发送一个名字给下位机，下位机通过查询数据库取得电话号码传回上位机,带详细文档。(MFC write two procedures, through the socket communication, next-bit machine. PC to send a name to the next crew, the next crew by querying the database to obtain the phone numbers return PC)

基于深度限幅的OFDM峰均比抑制器的设计（限幅法是最简单直接的一种，以降低误码率性能 频谱畸变和计算复杂度为主要代价。）(matlab OFDM)