基于原3proxy的源码进行改进,支持数据库权限控制

Description: This M-file plots the truncated Fourier Series representation of a square wave as well as its amplitude and phase spectrum.- Description: This M-file plots the truncated Fourier Series representation of a square wave as well as its amplitude and phase spectrum.

串口传输代码，用CSerial类编写，可以实现两个串口的传输数据。-Serial transmission code, used to prepare CSerial category, you can realize the two serial transmission of data.

局域网用户屏幕的控制和查看程序-LAN user screen control and view the procedure

CAN，全称为“Controller Area Network”，即控制器局域网，是国际上应用最广泛的现场总线之一。最初，CAN被设计作为汽车环境中的微控制器通讯，在车载各电子控制装置ECU之间交换信息，形成汽车电子控制网络。比如：发动机管理系统、变速箱控制器、仪表装备、电子主干系统中，均嵌入CAN控制装置。-CAN, called the "Controller Area Network" LAN controller that is the world"s most widely used fieldbus one. Initially, CAN was designed as a vehicle environment microcontrollers communications, the car of the electronic control devices to exchange information between ECU, the automotive electronic control network. For example : engine management systems, transmission controllers, instrumentation and equipment, electronic trunk system, both embedded CAN control devices.

使用Visual Basic 6实现真正实用的多线程串行通讯 事实上使用Visual Basic的ActiveX exe技术可以轻松的实现多线程处理，此技术在串行通讯中很好用，尤其需要一边通讯，一边数据处理方面，如果用timer实现串行通讯，其复杂程度可想而知。这个实例用在PC与PLC通讯以及PC和单片机通讯，都比较实用。 原理先不说了,先举个示例,有兴趣的话大家可以一起讨论

Serialport,很好用的VC串口通信类，这是最新版-Serialport, a good VC used in serial communication class, which is the latest version of

利用MODBUS与EMA智慧型电表通讯，达到接收资料，希望对大家有所帮助。-The use of MODBUS communications with EMA smart meter to receive information, we hope to be helpful.

通信、编码中m序列采样实现代码-communications, coding sequence sampling m code

代码实现串口收发数据功能，正常通信，这是本人自己练习使用，亲测通过，画图按钮实现的就是绘制函数并自动保存绘制的图片的功能

查询汉字区位码，输入汉字查出代码。用控件和ADO，写了两种，觉得哪个快就用哪个吧-Query characters location code, found the code to input Chinese characters. With controls and ADO, write two, which quickly find what you use