51单片机的串口通信程序，挺好的可以试试看哈-51 microcontroller serial communication program, very good to try and Kazakhstan

51单片机和上位机串口通信程序。非常简短的代码，适合初学者学习使用。-51 MCU and PC serial communication program. Very short code, suitable for beginners to learn to use.

这是一个51单片机与电脑通过串口通信的例子，包括单片机程序和主机程序，主机程序采用VC编写，使用CSerialPort串口类-This is the example of a 51 and a computer via serial port communication, including single-chip program and the host of the program, the host program prepared using VC, to use CSerialPort

VB 通信测试程序，里面有通过电脑串口连接51单片机的通信模块-VB COMM test program