paulrickardsSep 9, 2023

Graphically visualizing the erasure of a 16kbit #EPROM with a UV source in 16 seconds!

This time lapse shows all of the bits being flipped from 0 to 1 over about a 24 minute period. The first bit flips at 8 minutes.

What's fascinating to me is the bits "twinkle" as they flip back and forth before settling.

#RetroComputing #TimeLapse

Show threadNixieSep 10, 2023
@paulrickards That reminds me of someone hqving msde a camera with an eprom years ago. Slow as fuck, of course, but still funny.
Show threadPhil M0OFX
@Nixie @paulrickards There's a faster way involving a DRAM. Micron even made a chip called the OpticRAM which exploited the technique. Crazy tech but still the forerunner of modern CMOS imagers.
Sep 10, 2023 at 3:56pmWeb