If the tablet can be counted as PC computer, Apple will exceed HP, becoming the world's largest personal computer manufacturer. Hewlett-Packard CEO Meg Whitman admitted in an interview last November that if consider the iPad as personal computer, Apple will become the world's largest computer manufacturers. iPad tip: convert video to ipad.

Today, the "Fortune" website editor Philip Elmer-DeWitt forecast that last quarter, iPad sales may reach 14 million, while last quarter's PC sales of Hewlett-Packard was 14.7 million.

Last quarter, Apple's Mac sales may reach 5 million, which means that the combined sales of iPad and Mac will exceed 20 million. HP took up 13% share of PC sales, while Apple accounted for 17.6% share of PC sales, of course, these figures are on the premise that iPad is recognized as personal computer. What's hot: video to ipad converter.