Tag Archives: LED displays

What are LED Displays?Displays, also known as Nixie tubes, are electronic devices that display numbers and other information. The glass tube contains an anode made of wire mesh and multiple cathodes. Most nixie tube cathodes are in the shape of numbers. The tube is filled with a low-pressure gas, usually mostly neon with some mercury and/or argon. Charge a certain cathode, and the digital tube will emit colored light, which is usually orange or green, depending on the gas in the tube.