為解決將單片機串口的理論應用于實踐的問題,在單片機串口教學中設計出雙機通信案例。該案例使用兩臺單片機分別作為發送機和接收機,兩臺單片機串口均工作于方式一;發送機運行發送程序,按下發送機控制的矩陣鍵盤的按鍵,其鍵值通過串口傳送到接收機;接收機運行接收程序,并將從串口接收到的鍵值在數碼管上顯示出來。該案例不但可以直觀地展現出單片機串口通信的過程,還可以幫助學生掌握將單片機串口理論應用于實踐的技能,因此,可以推廣到高等學校單片機課程的教學中。

To solve the problem of applying micro control unit(MCU)serial port theory to practice,a dual MCU communication example is designed in the serial port teaching.In this example,two MCUs are used as sending MCU and receiving MCU,and the serial ports of the two MCUs work in mode one.The sending MCU executes the sending program which the key of the matrix keyboard is pressed;the key value is sent the receiving MCU through the serial port.The receiving MCU executes the receiving program which displays the key value on the digital tubes.This example does not only show the process of MCU serial port communication,but also help college students gain the skill of applying MCU serial port theory to practice.Therefore,the dual MCU communication example can be apply to the teaching of MCU course in colleges.

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