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According to [1], "[b]ecause the production of high-quality semiconductor materials was still decades away, Lilienfeld's solid-state amplifier ideas would not have found practical use in the 1920s and 1930s, even if such a device had been built."

It seems like there are parallels. Chua theorized about the memristor in the 1970s, but the first one wasn't created until the 2000s. A question I don't have the answer to: a transistor is to a vacuum tube as a memristor is to what?

[1] https://en.wikipedia.org/wiki/Transistor






Electroplating baths have a "memory" of how much current has passed through them. Edison used them as a way of measuring DC power use.

https://ethw.org/Electric_Meter




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