A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The first layer includes a silicone base polymer and a hydride-containing siloxane, wherein the hydride-containing siloxane is present at about 0. The converting may be based on a dictionary of non-target language or character set to target language or character set mappings. In some cases at least some of the bristle segments are spaced-apart to accommodate bending of the bristles.