Each week Ross Rubin contributes Switched On, a column about consumer technology. When Microsoft announced the Surface RT, it seemed clear that the ARM-based product -- with its precious adornments such as the kickstand and, of course, typing covers -- sought to appeal to those wanting to do more than is typically done with tablets. Microsoft, straight-faced, calls the Surface RT a PC, but with a connotation that it is trying to transform. There's less ambiguity around the Surface Pro. It has a capable Intel processor and runs virtually any Windows app. While someone from
