4 ms·

In the event that you need to test the display, you should just periodically light up all the segments briefly.

• pclmulqdq 2y ago
  This happens on startup for many critical systems. They turn every segment on and they turn every segment off.
  • 1-more 2y ago
    Cars, famously.
    • pclmulqdq 2y ago
      Yeah, almost everyone has seen this self-test happen before, but most people don't realize that is what's happening.
• jtriangle 2y ago
  Usually when these displays initialize they turn on every segment before displaying data for that reason. Also, fairly trivial to detect if a display has a segment out and throw a fault if needed. It's also not likely you burn out a whole segment at once if you have it wired up with that in mind.