Arduino Day 3 Quiz

Initially, the state of an input pin will be very unstable because the voltage that flows into the pin is very inconsistent, this is called a

There is two techniques we can use to prevent floating inputs, they are

• Pull-up resistor

• Push-up resistor

• Pull-down resistor

• Push-Down resistor

Which one below is correct?

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• 
• 
• 

which one below is the correct way to connect a pull-down resistor?

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• 
• 
• 

Which one below is true?

• Digital only can be 0 or 1

• Digital can have as many possible values as possible as long as all the values are continuous

• Analog only can be 0 or 1

• Analog values have infinite possible values as all their values are continuous, for example temperature

Which of the following is/are true?

• analogRead will give us a value between 0-1023

• analogRead will give us a value between 0-255

• analogWrite can write a value between 0-1023

• analogWrite can write a value between 0-255

if I supply 1.7V to A2, and by using analogRead(A2)

I will get around 348, is this true?

1.7/5 = 0.34

0.34 * 1024 = 347.82

• True

• False