两个单片机之间实现串口通信，第一个程序是发送一个数给另一个并返回一个数，同时点亮数码管。第二个程序是一个单片机接受6个数，另一个单片机发送六个数。第三个是两个单片机互相发送6个数。等几个串口通信的单片机程序。-Serial communication between two microcontrollers, the first procedure is to send a number to another and return a number, but lit LED. The second program is a microcontroller to accept 6 numbers, another microcontroller sends six number. The third is to send another two microcontrollers 6 numbers. And several serial communication microcontroller program.