Hi,
The requirements for BigBlueButton are not that high and it should work on most laptops (memory could be an issue on older models) and on any "high speed" internet connection.
Getting flash to work on a tablet is a different issue completely. Although it appears to be possible to install it on a MeMo tablet, it may not be straightforward (or recent versions may fail - I haven't tried it, I don't have a MeMo).
Good luck!