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Having debugged code with a logic analyzer, I'm pretty sure the voltage on those CPU pins is real, and really the consequence of the code I think I'm running.
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This. Try it! LAs are cheap and easier to use than a scope, even if it has digital features.

This is like arguing I can hear humans talk, therefore the souls must exist.

You can wire voltage to CPU pins without software.


The visible part of em spectrum by which we interact with computers daily needs no multimeters.



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