微机实现异步通信是依靠适配器来完成的，而后者又是以UART芯片，即通用异步收发器芯片为核心构成的。 IBM PC的异步通信适配器使用的UART芯片为INS...

此书是在BCB环境下开发串口通信的一本好书啊。文中详细讲解了串口通信的基本概念，同时很具体的描述了编写的过程并附有源码。-book is the BCB development environment Serial Communication a good book ah. This paper gave a detailed account of the serial communication the basic concept, but very specific description of the preparation process together with the source code.

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.

一个迷你的com通讯程序，是用win32asm写的。功能全面-a program made by win32asm

这是一个对modem编程的一个小程序, 对串口操作并发AT指令集.-this is a modem programming of a small program on serial operation with AT command set.

串口数据传输,用Tcomm或MSComm控件，该 pas文件做了一个类-serial data transfer, or use Tcomm MSComm control, the paper has done a pas a Category

Delphi串口通信控件-支持4个端口-Delphi serial communication control-support four ports

MAX232手册 MAX232手册 -MAX232手册MAX232手册MAX232手册

改进的SerialPort类单文档实例程序-improved SerialPort single document type sample program

Windows串口编程例子-The example of uart in Windows

vb演示Mscomm各种通信功能-vb demonstration of various communications functions Mscomm