RAM: the forgotten history (2024)

Automated excerpt

To unlatch the circuit, the normally-closed (NC) “reset” button must be pressed to interrupt the flow of electricity. Relay-based main memory featured prominently in what was probably the first true electronic computer, Konrad Zuse’s Z3:The Zuse Z3 memory unit, ~1938. Meet torsion memory:Torsion memory from the Monroe 925 calculator, 1970. But for about two decades — roughly between 1950 and 1970 — magnetic main memories were quite common too.

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