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Energizing a vacuum-tube flip-flop module from a 1948 IBM system

Hacker News•Fri, Jul 31, 2026, 04:49 PM•2 min read

3 points, 1 comments on Hacker News

Source: [Hacker News](https://www.righto.com/2026/07/ibm-604-trigger-tube-module.html)

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#tech #energizing #vacuum #tube #flip #flop #module #ibm #system

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