Question

Which function in the Arduino is used to start the serial communication using the COM port?

1) Serial.available()
2) Serial.begin()
3) ()
4) setup()

Answer 1

The function used to initialize serial communication in an Arduino program is Serial.begin(), which is called within the setup() function.

Step-by-step explanation:

In the Arduino platform, the function used to begin serial communication through the COM port is Serial.begin(). This function is typically called in the setup() portion of an Arduino sketch and takes the baud rate as its parameter, which defines the data rate for communication. For example, to start serial communication at a common baud rate of 9600, you would use the code Serial.begin(9600);. It's important to match the baud rate specified in Serial.begin() with the rate set on the serial monitor to ensure successful communication.