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发表于 2015-7-1 15:03:04
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做了个不用shiftOut的流水灯,也就是每人工移一个位,就写入存储寄存器。
并在Q7`上也接了一个,Q7'看上去是与Q7同步的,是不是就与Q7一模一样?
int latchPin = 8; // ST_CP
int clockPin = 12; // ST_CP
int dataPin =11; //DATA
void setup() {
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);
randomSeed(analogRead(0));
}
void loop() {
digitalWrite(latchPin, LOW);
digitalWrite(clockPin, LOW);
int t = random(5);
t = constrain(t, 0, 1);
t = 1-t;
digitalWrite(dataPin, t);
digitalWrite(clockPin, HIGH);
digitalWrite(latchPin, HIGH);
delay(100);
} |
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