# Reverse engineering a vintage diode\-transistor logic chip

- HackerByte page: <https://hackerbyte.net/en/stories/a-technical-article-explaining-the-reverse-engineering-process-of-an-old-diode-t-50427365>
- Original source: <https://www.righto.com/2026/11/signetics-st680a-dtl-nand.html>
- Hacker News discussion: <https://news.ycombinator.com/item?id=50427365>
- Submitted to Hacker News: 2026-11-09T16:01:05.000Z

A technical article explaining the reverse engineering process of an old diode\-transistor logic integrated circuit \(chip\).

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