Apple's extraordinary year-end results has catapulted it to the top position among PC vendors, according to a new report by industry analyst firm Canalys. The company shipped 15.4 million iPads and 5.2 million Macs in the calendar fourth quarter, representing 17 percent of all "client PCs" (meaning desktops, notebooks, netbooks and tablets combined) shipped globally during that period. Last year, Apple was the third-place PC vendor with tablets included.
