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I believe you're both talking about two separate designs - I'm sure one might have influenced the other but they're certainly not the same.

The analog knob you're referring to, I think, is the _very_ old design that functioned more like an egg timer. It was spring loaded and simply turned on the microwave circuit and broke it when the timer mechanically reached resting position.

The new knob is digital, and you use it to navigate a digial menu and to increase/decrease the timer prior to pressing it inward to start the process. Completely novel input mechanism.




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