A. Orange/white, orange, green/white, blue, blue/white, green, brown/white, brown
B. Blue, blue/white, orange/white, orange, brown/white, brown, green/white, green
C. Green/white, green, orange/white, blue, blue/white, orange, brown/white, brown
D. Orange/white, orange, brown/white, brown, green/white, green, blue, blue/white
第1题:
以下频率最高的是
A.sin(0.2pi n) pi是圆周率
B.sin(1.9pi n) pi是圆周率
C.sin(0.5pi n) pi是圆周率
D.sin(pi n) pi是圆周率
E.sin(10pi n) pi是圆周率
F.sin(5pi n) pi是圆周率
第2题:
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)
第3题:
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)
第4题:
Arduino怎么将引脚设置为高电平。
A.digitalWrite(pin,HIGH)
B.pinMode(pin,INPUT)
C.digitalWrite(pin,LOW)
D.analogWrite(pin,num)
第5题:
Arduino怎么将引脚设置为输入。
A.pinMode(pin,OUTPUT)
B.pinMode(pin,INPUT)
C.digitalWrite(pin,HIGH)
D.analogWrite(pin,num)
第6题:
如果要设置引脚PC10输出高电平,下面哪一个代码是正确的?
A.HAL_GPIO_WritePin(GPIOC,GPIO_PIN_10,GPIO_PIN_SET)
B.HAL_GPIO_WritePin(GPIOC,GPIO_PIN_10,GPIO_PIN_RESET)
C.HAL_GPIO_TogglePin(GPIOC,GPIO_PIN_10,GPIO_PIN_RESET)
D.HAL_GPIO_TogglePin(GPIOC,GPIO_PIN_10)