As part of today's earnings call, Apple CEO Tim Cook said he believes tablets will eventually eclipse PCs. "I believe there will come a day when tablet market by unit is larger than the PC market," he said. Cook emphasized that Apple would continue to be innovative in the tablet market, and that people want to do multiple things with them. He added that Apple does not see tablets such as iPads being in the same category as devices such as the basic Kindle and Nook. "People who want an iPad will not settle," Cook said. A recent report from the Pew Research Center shows that the number of adult Americans who own tablets leaped from 10 percent to 19 percen