# Reverse engineering a vintage diode\-transistor logic chip

- HackerByte page: <https://hackerbyte.net/en/stories/reverse-engineering-a-vintage-diode-transistor-logic-chip-to-understand-its-work-50416011>
- Original source: <https://www.righto.com/2026/11/signetics-st680a-dtl-nand.html>
- Hacker News discussion: <https://news.ycombinator.com/item?id=50416011>
- Submitted to Hacker News: 2026-11-08T19:03:48.000Z

Reverse engineering a vintage diode\-transistor logic chip to understand its workings and structure.

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