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A deep-dive blog post reverse-engineering a 1948 IBM 604 vacuum-tube flip-flop module, explaining its circuitry and demonstrating it in operation.
A detailed teardown and live demonstration of a TR-3 vacuum-tube trigger/flip-flop module from IBM's 1948 Electronic Calculating Punch, explaining its circuitry and historical significance.
This paper studies functional redundancy in recurrent neural networks by using ordered real Schur coordinates to identify structured ablations that preserve task performance, finding that task-restricted symmetries vary across tasks and trained solutions.