LCD Display

Introduction

The LCD display is a common output device used in embedded systems. It is used to display information to the user in a readable format. The LCD display can be used to display text, numbers, and symbols. It is commonly used in applications such as digital clocks, thermometers, and other devices that require a visual output.

Pin Description

The LCD display has 16 pins. These pins are used to connect the display to a microcontroller. The pins are used to control the display, send data to the display, and power the display. The pins are usually connected to a microcontroller using a parallel interface. However, you can also use an I2C backpack to connect the display to a microcontroller using the I2C protocol.

We recommend using an I2C backpack to connect the LCD display to a microcontroller. This simplifies the wiring and reduces the number of pins required to connect the display to the microcontroller.

Code Example

The following code example demonstrates how to use the LiquidCrystal library to control the LCD display using an Arduino board. This example assumes that the LCD display is connected to the Arduino using an I2C backpack.

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#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // Initialize the LCD
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("Hello, world!");
}

void loop() {
  // Do nothing
}

(This example uses the LiquidCrystal_I2C library to control the LCD display. You can download the library from the Arduino Library Manager.)