Interfaces from the ’70s, ’80s and ’90s: Before touchscreens, LED and LCD displays became common, there were VFDs, or Vacuum Fluorescent Displays.
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If this video below were just a compilation of them, it would be glorious; instead Netherlands-based artist Posy not only shows you some fine examples, but pulls a few apart to explain how they work, how they can break, and how you can change the color of the displays yourself with a little acetate.
Here it is, with Posy’s helpful explanations:
Source: core77