? 掌握利用红外线实现数据传输的原理和方法。，利用两块实验板，利用红外线实现实验板A向实验板B发送数据。并将发送和接收的数据显示在数码管上。(The principle and method of using infrared ray to realize data transmission are mastered. Using two experimental plates, the experimental board A is used to send data to the exper