任务：用二台8086K通过8251进行双机通讯，一台作为发送，另一台作为接收，发送方读入按键值，并发送给接收方，接收方收到数数据后在数码管上显示。

　　要求：实现双机的串行通信，并在数码显示区域显示传输的内容，画出电路原理图、元器件布线图、实验电路图；绘制程序流程图，进行串行通信程序设计（采用汇编语言）。-Task: Using two sets of 8086K through 8251 for two-machine communication, one as the sender, the other as a receiver, the sender read key value, and sent to the receiver, the receiver receives the number of data in the digital tube display. Requirements: to achieve double the serial communication, and transmission in the digital display area displays the contents, draw the circuit diagram, component wiring diagrams, test circuit　drawing program flowcharts, program design for serial communication (using assembly language) .