LCD2004 20X4 Blue LCD Display Module

The LCD2004 20X4 Blue LCD Display Module or 2004 character-type liquid crystal display is a kind of dot matrix module to show letters, numbers, and characters and so on. It is composed of 5X8 dot matrix positions; each position can display one character. There's a dot pitch between two characters and a space between lines, thus separating characters and lines. The model 2004, means it displays 4 rows of 20 characters. Generally, LCD2004 has parallel ports, that is, it would control several pins at the same time. LCD2004 can be categorized into eight-port and four-port connections. If the eight-port connection is used, then all the digital ports of the Arduino Uno board are almost completely occupied. If you want to connect more sensors, there will be no ports available. Therefore, the four-port connection is used here for better application.

KEY FEATURES OF LCD2004 20X4 GREEN LCD DISPLAY MODULE:

• 20 character X 4 line Blue LCD
• Adjustable backlight intensity and contrast
• 5V operation

These displays are straightforward to use and are a great way to provide a user interface on many projects where you need more info than simple LED indicators or 7-Segment displays can provide since these are full alphanumeric displays with 4 lines of 20 characters each for a total of 80 characters which is a fair amount of info. For an interactive display, pairing this type of display with a rotary encoder to navigate and select menu items on the display can provide a very nice user interface.