Tube Computer
Four hundred sixty tubes, and the software it runs is an airship flight sim. Mike's Tube Computer is an 8-bit machine built on NOR-based logic, the same approach Hackaday points…
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vacuum tubes
2 formulae on file
Nuvistor 555 Timer
Glorious, and absurd... I'm saying that as a compliment. Eric Schlaepfer, who posts as TubeTimeUS, built a 555 timer out of eight tetrode nuvistors, and Hackaday covered it this month…