In Star Trek TNG, all 24th century tech has blinking LEDs on it, including Data’s positronic brain 😄
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One thing I noted, is that TNG doesn't have any blue LEDs. Blue LEDs were invented only in the early 1990s and commercial versions would not have been available until mid 1990s and TNG's last season was 1994.
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I think they might, but I found it funny that in TNG, some LEDs are slapped on to show futuristic tech. 😆
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