使用8251发送数据实验连续发送一个二进制数（比如53H，F0H，AAH等），从示波器上观测数据的起始位、数据位和停止位。本实验要求在数码管上显示“8251-A04”。-Send data using the 8251 experiment for sending a binary number (for example, 53H, F0H, AAH, etc.), observational data from the oscilloscope of the start bit, data bit and stop bit. Requirements of this experiment in the digital tube displays　8251-A04 .