利用单片机串行口，实现两个实验台之间的串行通讯。其中一个实验台作为发送方，另一侧为接收方。发送方读入按键值，并发送给接收方，接收方收到数据后在LED上显示-Use of single-chip microcomputer serial port, the realization of serial communication between the two test bench. One of the test bench as the sender, the other side of the receiver. Sender to read the key value, and sent to the receiver, the receiver after receiving the data on the LED display