Which function in the Arduino IDE sets a pin to output or input state?

Study for the Internet of Things (IOT102) Test. Access comprehensive flashcards and multiple choice questions, each with hints and explanations. Get prepared for your exam!

Multiple Choice

Which function in the Arduino IDE sets a pin to output or input state?

Explanation:
Setting the pin mode determines whether a digital pin acts as a driven output or as an input that senses signals. The Arduino function that does this is pinMode, which takes the pin number and a mode such as OUTPUT or INPUT (and you can also use INPUT_PULLUP to enable the internal pull-up resistor). This is why pinMode is the correct choice: it explicitly defines the direction of data flow for the pin. Once a pin is configured as OUTPUT, you typically use digitalWrite to drive it HIGH or LOW. Delay and AnalogRead serve other purposes—Delay pauses the program, and AnalogRead reads a voltage from an analog-capable pin. For example, pinMode(13, OUTPUT); digitalWrite(13, HIGH);.

Setting the pin mode determines whether a digital pin acts as a driven output or as an input that senses signals. The Arduino function that does this is pinMode, which takes the pin number and a mode such as OUTPUT or INPUT (and you can also use INPUT_PULLUP to enable the internal pull-up resistor). This is why pinMode is the correct choice: it explicitly defines the direction of data flow for the pin. Once a pin is configured as OUTPUT, you typically use digitalWrite to drive it HIGH or LOW. Delay and AnalogRead serve other purposes—Delay pauses the program, and AnalogRead reads a voltage from an analog-capable pin. For example, pinMode(13, OUTPUT); digitalWrite(13, HIGH);.

More practice questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy