The 20x4 LCD display offers 80 characters across four lines, ideal for displaying textual information, numeric data, custom symbols, and simple graphics. Widely used in industrial, consumer, and educational applications, it supports parallel and I2C interfaces for flexible integration. This article explores its capabilities, practical uses, and programming tips to maximize its potential.

IntroductionLCD modules are essential components in many Arduino projects, providing a visual interface for displaying information. The 20x4 LCD module, in particular, is a popular choice due to its ability to display 20 characters across 4 lines. However, when working with these modules, you may en