02-09-2016, 02:27 AM
The simplest example would be emulating the typical notification LED available in many phones, not only for apps because it could be used as a fast way to know whats going on inside the electronics (domotics, robots, on line services, everything you can program and execute, etc). The LCD screen would work on the same way but offering more complete information and even, if input buttons are added, the possibility to create menus and ways to execute processes without needing an external screen (autobackups, displaying the network state and traffic, temperature of the board, etc).