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Write-Solely Memory (Joke)
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Write-solely memory (WOM), the opposite of read-solely memory (ROM), started as a humorous reference to a memory machine that could possibly be written to however not read, as there seemed to be no sensible use for a memory circuit from which data couldn't be retrieved. However, it was ultimately recognized that write-only memory additionally describes certain functionalities in microprocessor methods. The idea is still usually used as a joke or euphemism for a failed memory device. 1940s. Thought of "an icebreaker", it was intentionally included within the Signetics catalog. Instead of the extra typical characteristic curves, the 25120 "absolutely encoded, 9046×N, Random Access, write-only-memory" knowledge sheet included meaningless diagrams of "bit capability vs. Temp.", "Iff vs. Vff", "Number of pins remaining vs. variety of socket insertions", and "AQL vs. promoting value". 10 Vcc (double the Vcc of normal TTL logic of the day), and Vdd of 0±2% volt (i.e. floor). It was specified to run between zero and −70 °C.
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