A new report from one of the Web's leading researchers spells out what news reports have suggested: that tablet computers and e-readers made a huge leap in popularity this holiday season.

The number of U.S. adults who owned tablets such as Apple's iPad and Amazon's Kindle Fire, or e-readers, like the Kindle or Barnes & Noble's Nook, increased from 10% in mid-December to 19% in early January, according to the report from the Pew Internet & American Life Project.

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