下面____指令能够输出占空比为20%的PWM波形。
A: digitalWrite(20);
B: analogWrite(255);
C: digitalWrite(102);
D: analogWrite(51);
A: digitalWrite(20);
B: analogWrite(255);
C: digitalWrite(102);
D: analogWrite(51);
举一反三
- 怎么用Arduino输出占空比为0.5的pwm波。 A: analogWrite(pin,123) B: analogWrite(pin,126) C: analogWrite(pin,127) D: analogWrite(pin,128)
- 在Arduino中,输出模拟信号应该使用哪个命令() A: analogRead B: analogWrite C: digitalWrite D: digitalRead
- Arduino怎么将引脚设置为低电平。 A: digitalWrite(pin,HIGH) B: pinMode(pin,INPUT) C: digitalWrite(pin,LOW) D: analogWrite(pin,num)
- analogWrite(LED_B,255);表示PWM写入LED_B口()。
- Arduino怎么将引脚设置为输出。 A: pinMode(pin,OUTPUT) B: pinMode(pin,INPUT) C: digitalWrite(pin,HIGH) D: analogWrite(pin,num)