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cai yong 一个串口拓展成4个串口！(1 uart to 4)

Visual c++实践与提高——串口通信与工程应用篇10源代码(Visual c++ practice and improve- serial communication and project source code (Application) 10)

说明：  很多下位机程序员都有这样的经历，在交付工程的时候对方要求提供源程序，而大多数下位机程序员都知道交出源程序是意味着什么，所以为了保护各位下位机程序员的合法利益.这个工具，伪装过后的源程序可以编译通过。(many lower computer programmers have the same experience that the delivery of the other works on the request source, and most of the next crew to surrender programmers are aware of what it means to the source, Therefore, in order to protect you and lower computer programmer's legitimate interests. this tool, camouflage after the source compile.)

说明：  调试使用的串口助手，程序源码，功能齐全，可以调试程序(Serial Port Assistant for Debugging, Program Source Code, Full-featured, Debugging Program)

用VB编写的FX系列PLC通信动态链接库,用户只需调用API函数就可以简单的实现串口通讯(VB prepared by the FX series PLC communication dynamic link library, Users only need to call API functions can be achieved by a simple serial communications)

STRING MATHMATICAL PLEASE COMMENT

PLC程序，结合VB通信实现两轴运动带减速功能(PLC programming, communication with VB to achieve two-axis motion with deceleration )

用vb实现串口间通信,可以用来熟悉串口间传输信息的原理.(with Serial Communication, which can be used with serial transmission of information between the principle.)

vb 串口上位机 很简单的一个版本，大家自己扩展功能吧 (com executed on pc,it s a simple version ,easy for expansion)

说明：  Wincc使用MSComm控件串口通讯，VB中发送十六进制数据(Wincc uses MSComm control to communicate through serial port and sends hexadecimal data in VB)