80c51单片机双机串口通信(发送：用矩阵键盘发送8个数；接受：在数码管上动态显示这个数)，且可以下一次再发，在现实，用Protuse仿真过，能行-80c51 single chip dual serial communication (transmission: a matrix keyboard to send the number 8　accepted: in the digital control on the dynamic display of this number), and can be made next time, in reality, simulation with Protuse too, can do