pascal写的一个通讯例子

profibus主站及从站源代码，可以作为主从站开发的借鉴-Profibus master and slave source code can be used as a major development from the point of reference

这是我做的关于考勤机的一些测试程序，请大家积极下载，很有帮助。-This is my appraisal done on the plane of some testing procedures, please download positive and helpful.

串口调试程序，是用Ｃ＋＋　ＢＵＩＬＤＥＲ开发的，并用了窗口渐变-Serial debugger, is to use C BUILDER developed and used a window Gradient

本串行通信程序利用汇编语言通过BIOS中断调用和DOS功能调用实现PC机双机串行通信。其中，上位机和下位机串行口均为辅串口COM2（口地址为2FXH），对外用9针连接器与令一台PC机连接；BIOS通过“INT 14H”4个中断服务子程序，分别完成串口初始化编程、发送一帧数据、接受一帧数据以及测试通信线状态。本程序分为PC机串口自动测试程序（目的是测试串口好坏）和PC机全双工双机通信程序两个部分。-the serial communications procedures through the use of assembly language BIOS interrupt calls and function calls DOS PC Dual Serial Communication. Among them, PC and the next crew will be supplemented by serial port Serial COM2 (I address 2FXH) external with 9-pin connectors and enable a PC connection; through the BIOS "INT 14H," four interrupt service routines, complete serial port initialization programming, Send a data receiving a data communications test and the state line. The procedures are divided into PC serial automatic test procedure (for the purpose of testing Serial good or bad) and full-duplex PC-machine communication program two parts.

串口通信程序,可以直接执行使用,带有界面容易操作-serial communication procedures, the implementation can be directly used, with the interface is easy to operate

Windows 2000 环境下直接访问串口、并口的小程序，包括VC、delphi源码-under Windows 2000 directly to the serial port, parallel port of small programs, including the VC, Delphi source

一个很好的串口通信程序，给不熟悉的朋友借鉴使用-Serial communication program, to learn from friends are not familiar with the use of

VC的COM口驱动程序,使用了ACTIVEX控件-VC COM port drivers, the use of Activex Control

51单片机串口调试程序，谢谢大家使用，本人刚出道，希望大家多多包涵-51 microcontroller serial debugging procedures, thank you all use, the title track, I hope you will forgive me

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-sent through the serial port at the value orders waiting to return to judge the current state of network service providers and other relevant information in communications with EDGE