LED点阵实验(流动显示1 2 3 4 5 6 7 8 9)说明 通过P0 和 P2 作为点阵接要求学员掌握 LED点阵的工作原理和 各点阵脚的定义及接法，具体接线请参考接线说明我们采用的LED点阵式是低功耗，在做实验时可以用单片机脚直接驱动　　-LED dot matrix experiments (flow visualization 123,456,789)** DEscr iptION P0 and P2 as dot-matrix interfaces** Requires students to acquire the working principle of LED dot matrix and the definition of the point position and access method, specific Please read the wiring instructions** we use LED dot matrix is ​　​　a low-power, when doing the experiment SCM can be used to directly drive the foot