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explain each code line. all the details

explain each code line. all the details

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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explain each code line. all the details.

233 ♡ ♡ ♡ ♡ ♡ 29 90L NO 30 // constants won't change. Used here to set a pin number : 31 const int ledPin = LED_BUILTIN; // the number of the LED pin 32 33 // Variables will change : 34 int ledState = LOW; 35 36 // Generally, you should use "unsigned long" for variables that hold time 37 // The value will quickly become too large for an int to store // will store last time LED was updated "455 10 10 10 10 10 556666666 38 unsigned long previousMillis = 0; 39 40 // constants won't change : 41 const long interval = 1000; 42 43 void setup() { 44 45 pinMode(ledPin, OUTPUT); 46 } 47 48 void loop() { 50 196 A WNTO 49 // here is where you'd put code that needs to be running all the time. 51 52 53 54 56 57 58 59 60 61 55 unsigned long currentMillis = millis(); 62 63 64 65 66 // set the digital pin as output: 67 68 69 70 71 // ledState used to set the LED // check to see if it's time to blink the LED; that is, if the // difference between the current time and last time you blinked // the LED is bigger than the interval at which you want to // blink the LED. } // interval at which to blink (milliseconds) if (currentMillis - previousMillis >= interval) { // save the last time you blinked the LED previousMillis: = currentMillis; // if the LED is off turn it on and vice-versa: if (ledState LOW) { ledState = HIGH; } else { == ledState = LOW; } Serial Monitor } // set the LED with the ledState of the variable: digitalWrite(ledPin, ledState);
Transcribed Image Text:233 ♡ ♡ ♡ ♡ ♡ 29 90L NO 30 // constants won't change. Used here to set a pin number : 31 const int ledPin = LED_BUILTIN; // the number of the LED pin 32 33 // Variables will change : 34 int ledState = LOW; 35 36 // Generally, you should use "unsigned long" for variables that hold time 37 // The value will quickly become too large for an int to store // will store last time LED was updated "455 10 10 10 10 10 556666666 38 unsigned long previousMillis = 0; 39 40 // constants won't change : 41 const long interval = 1000; 42 43 void setup() { 44 45 pinMode(ledPin, OUTPUT); 46 } 47 48 void loop() { 50 196 A WNTO 49 // here is where you'd put code that needs to be running all the time. 51 52 53 54 56 57 58 59 60 61 55 unsigned long currentMillis = millis(); 62 63 64 65 66 // set the digital pin as output: 67 68 69 70 71 // ledState used to set the LED // check to see if it's time to blink the LED; that is, if the // difference between the current time and last time you blinked // the LED is bigger than the interval at which you want to // blink the LED. } // interval at which to blink (milliseconds) if (currentMillis - previousMillis >= interval) { // save the last time you blinked the LED previousMillis: = currentMillis; // if the LED is off turn it on and vice-versa: if (ledState LOW) { ledState = HIGH; } else { == ledState = LOW; } Serial Monitor } // set the LED with the ledState of the variable: digitalWrite(ledPin, ledState);
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