Post · Fedizen

@alcinnz@floss.social 19 min. ago

Reverse engineering a vintage diode-transistor logic chip - Ken Shirriff:
http://www.righto.com/2026/11/signetics-st680a-dtl-nand.html

Reverse engineering a vintage diode-transistor logic chip

Going through a collection of old parts, CuriousMarc encountered some ICs that he couldn't identify. He opened up one of these ICs, and I st...

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