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Anonymous Archived
08/30/25(Sat)22:10:29 No.106438849
File: inviswtch.jpg (21 KB, 640x480)
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Anonymous 08/30/25(Sat)22:10:29 No.106438849 Archived
Hey, /g/, How did bluish light displays work before the development of the blue LED?
>>
Anonymous
08/30/25(Sat)22:12:07 No.106438862
Anonymous 08/30/25(Sat)22:12:07 No.106438862
>>106438849
vacuum fluorescent displays you stupid nignog
>>
Anonymous
08/30/25(Sat)22:20:53 No.106438910
Anonymous 08/30/25(Sat)22:20:53 No.106438910
they had a filter over them
>>
Anonymous
08/30/25(Sat)22:22:35 No.106438920
Anonymous 08/30/25(Sat)22:22:35 No.106438920
>>106438862
Think they might be talking about Electroluminescent displays, but VFDs would also fit the bill of “bluish light displays”
>>
Anonymous
08/30/25(Sat)22:51:10 No.106439114
Anonymous 08/30/25(Sat)22:51:10 No.106439114
File: s-l960-3451570399.png (1.04 MB, 720x960)
1.04 MB
1.04 MB PNG
>>106438862
My grandfather gave me one of these when I was a kid. Except, it had been dropped and front case fell off, so it was the raw board and display and you could see all the inner workings.
It was the coolest fucking shit in elementary school, while everyone else was using the stupid solar ones with the dark, un-backlit LCD screens.
>>
Anonymous
08/30/25(Sat)23:00:08 No.106439173
Anonymous 08/30/25(Sat)23:00:08 No.106439173
>>106438849
radioactive material
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