通过串口发送at指令 等待返回值判断当前的网络状况以及服务商等有关信息 用与gprs的通信...

《VC++ 和VB串并口开发技术工程应用实例导航》一书的配套源代码，第1章 串口编程调试精灵，第2章 云台镜头控制系统，第3章 电话自动应答系统，第4章 短信实现远程监测系统，第5章 步进电机控制，第6章 来电显示客户管理系统

本文详细地介绍了在Win32环境下通过调用通信API 函数以异步方式来实现PC机和MCS 51 单片机之间的通信过程给出了软硬件设计机理以及详细的通信协议说明-This article described in detail in the Win32 environment by calling the communication API function in order to realize asynchronous approach to PC and MCS 51 Singlechip give the communication process between the design of the mechanism of the hardware and software as well as detailed description of the communication protocol

串口助手小程序,用vc++开发,用于接受串口发送的数据并显示出来-Serial assistant applet, using vc++ Development, for the acceptance of serial data sent and displayed

本文讲述的利用通讯控件发送与接收通讯数据都是基于二进制来实现的，基于文本的情况基本与此类似。要想利用好通讯控件还有其他一些应该注意的地方，比如波特率的设置、接收与发送缓冲区的设置以及通讯过程中的延时问题的处理等等。-This paper describes the use of communications controls send and receive communications are based on the binary data to achieve, based on the basic text of this and similar. To make good use of communication controls should also pay attention to some other place, such as baud rate settings, receiving and sending the buffer settings and communication latency in the process of dealing with such problems.

详细介绍了使用VB开发RS-232通信程序的全过程，并介绍了vb通信控件的用法。-Described in detail the use of VB-RS-232 communication program the whole process and introduced the use of the Communication Control in vb.

射频卡读写程序,C#版，绝对绝无仅有的，可以读写交通卡，需要读写设备-RF card reader procedures, C# version, absolutely unheard of, the card can read and write traffic, the equipment needed to read and write

GPS数据采集程序 希望对各位有用-GPS data collection procedures hope useful to you!

串口通讯程序，本程序使用labview通过RS232协议与单片机进行通讯-serial communication procedures, the procedures for the use of the PC through the RS232 agreement with SCM communication

的问题.派尔高协议,控制左转右转时,出现问题.其他功能好用.我用DELPHI写的程序,在MOUSEDOWN中, str := chr($FF)+chr($01)+chr($00)+chr($04)+chr($0F)+chr($00)+chr($14) MSComm1.output := str 在CLICK事件中: str := chr($FF)+chr($01)+chr($00)+chr($00)+chr($00)+chr($00)+chr($01) MSComm1.output := str -Problem. Pelco agreement左转右转control when there are problems. Other features easy to use. DELPHI I used to write the procedures in the MouseDown, str: = chr ($ FF)+ Chr ($ 01)+ chr ($ 00)+ chr ($ 04)+ chr ($ 0F)+ chr ($ 00)+ chr ($ 14) MSComm1.output: = str in the CLICK event: str: = chr ($ FF)+ chr ($ 01)+ chr ($ 00)+ chr ($ 00)+ chr ($ 00)+ chr ($ 00)+ chr ($ 01) MSComm1.output: = str

c8051F221的SPI总线通信(收)-c8051F221 SPI Bus Communication (received)