能实现如dsn（protues打开）文件所描述的设计图的双机通信功能，两个单片机可以互发数码，并在相应的8段数码管上显示（当然，hex文件需要同时烧在两台单片机上）-To achieve such dsn (protues open) communication feature double file described the design of two digital microcontroller can be exchanged and displayed on the corresponding 8 digital tube (of course, hex files need to burn two microcontroller a)