Yes, brains apparently can do consciousness.
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?