Its exactly the same, the universe is functionally a computing device, it is based on data and causality. Its complex but our brains do not work deeper than the neuron and so can be modeled in other computing devices like it is modeled in the computing device that is the universe.
Would you say that displaying image of something on a screen qualifies as actually happening? Writing data on a storage medium? What about a roomba vacuuming a floor?
> Would you say that displaying image of something on a screen qualifies as actually happening?
Yeah, of course.
What I'm addressing is "if we turn 100% of everything about neurons into numbers we can do calculations on those numbers and it's the same as that stuff actually happening with real neurons". Which is entirely wrong. A trajectory calculation isn't different from actually firing a projectile because it's not precise enough but because it's something else entirely.
Can descriptions of brains do consciousness? I don't know why we'd expect that they could. You can describe a fire in all the detail you like, and burn nothing.
Can electronic brains be conscious? I dunno. If I had to guess? Sky's-the-limit ignore-all-physical-and-temporal-constraints? Probably. Within the bounds of what humans will ever achieve? Maybe. I doubt they'd look as little-removed from tabulation machines as ours are, though. Like I definitely don't think you get there solving math problems. That would be surprisingly metaphysical.
A fire is something that happens externally and has observable actions. An internal state is not. Your thoughts may take a physical form but that form cannot be demonstrated. Unless you can show me telekinesis then you have only intuition. Why are you so certain that these intuitions are true?
Possibly metaphysical naturalism is wrong and supernatural things exist! And maybe thoughts (and/or the experience of consciousness) are among those supernatural things. That could be it. In which case sure, maybe solving math problems can create consciousness (why not?).
Do I think supernatural things like thoughts not being represented in physical reality exist? I defer to Russell's Teapot on this one and lean toward "no". If they do, then attempting to reason about anything gets pretty iffy anyway. Who knows what might exist or be true, in that case!
There is nothing that says that if thoughts are not made in brains they must be supernatural. You are making conclusions not based on evidence or argument.