1、实验材料

（1）UNO  R3板 （2）流水灯

2、连线图

3、Mixly编程

4、扩展：Arduino IDE编程

int BASE = 2;int NUM = 13;int delayTime=100;
void setup(){for (int i = BASE; i < BASE + NUM; i ++){pinMode(i, OUTPUT);}}
void loop(){for (int i = BASE; i < BASE + NUM; i ++){digitalWrite(i, LOW);delay(delayTime);}for (int i = BASE; i < BASE + NUM; i ++){digitalWrite(i, HIGH);delay(delayTime);}}

5、实验现象

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