b'CODE TO NOTEDIGITAL OUTPUT: When youre using a pin as an OUTPUT, you can command it to be digitalWrite(D13, HIGH); HIGH (output 5 volts) or LOW (output 0 volts).Causes the program to wait on this line of code for the amount of DELAY: time in between the brackets, represented in milliseconds (2000ms delay(2000); = 2s). After the time has passed, the program will continue to the next line of code.COMMENTS: Comments are a great way to leave notes in your code explaining //This is a comment why you wrote it the way you did. Single line comments use two forward slashes //, while multi-line comments start with a /* and /* So is this */ end with a */. NEW IDEASCODING CHALLENGES: The Coding Challenges section is where you will find suggestions for changes to the circuit or code that will make the circuit more challenging. If you feel underwhelmed by the tasks in each circuit, visit the Coding Challenges section to push yourself to the next level.CODING CHALLENGESPERSISTENCE OF VISION: Computer screens, movies and the lights in your house all flicker so quickly that they appear to be on all of the time but are actually blinking faster than the human eye can detect. See how much you can decrease the delay time in your program before the light appears to be on all the time but is still blinking.MORSE CODE: Try adding and changing thedelay()values and adding more digitalWrite()commands to make your program blink a message in Morse code.TROUBLESHOOTINGI get an error whenThe most likely cause is that you have the wrong board selected in the Arduinouploading my code IDE. Make sure you have selected Tools > Board > Arduino/Genuino Uno.18 : circuit 1a'