Tablets are on a fast growth track that could delay many PC sales and is comparable more to TVs and other major electronics, UBS analyst Maynard Um said in a detailed study. The iPad, Galaxy Tab and other tablets wouldn't directly steal share from notebooks but, by late 2011, could persuade many users to stall computer upgrades if a tablet costs the same. Users will still need computers for writing, and iPad users are still tied to a computer to sync and get updates.