使用标准控件 Microsoft Communications Contro 进行串口设置，串口读写，读写输入输出缓存。...

Siemens PLC与VB通讯的例子。先要安装Siemens的PCAcce-Siemens PLC与VB通讯的例子。先要安装Siemens的PCAccess

全面分析了RS-232、RS-422、RS-485之间的区别-comprehensive analysis of the RS-232, RS-422, RS-485 the distinction between

C8051F340 uart1简单程序 实现串口1的数据收发-C8051F340 uart1 11111111111111111

基于vb的西门子plc和上位机通信的实现方法 拷贝就行-vb-based Siemens plc and the personal computer communications method copy OK

getmywish结合visual basic60和msdn帮助，编写了一个两个串口的受到发送程序，该程序在win98,win2000,winxp下调试通过，希望和大家工勉-getmywish combine visual and VARIANT basic60 help prepared a two Serial sent by the program, which in win98, WIN2000. Debugging under winxp passed, and we hope that the Mian

指导你如何通过串口发送数据和ASC码，并讲述如何接收-guide you through the serial port and send data ASC yards, and on how to receive

本文件给出了如何一步一步实现crc校验。并给出了例子。如果懒得编写。可以直接嵌入程序。-this document is a step-by-step how to achieve crc check. An example is given. If too lazy to prepare. Procedures can be directly embedded.

AVR单片机ATmega128的串口通讯程序，根据输入的数据，点亮不同的指示灯，可以验证串口通讯的正确性。-AVR ATmega128 serial communications procedures, data entry, lit the lights come on, can verify the correctness of serial communications.

汇编操作串口，适合对速度要求高而API达不到的情况下的要求-compilation operation, suitable for high speed API unable to reach the requirements under the circumstances