Peter Suciu writing at Fortune:
Another factor in the slowdown of PC sales is the continued growth of do-more tablet computers and smartphones. Counting tablets as PCs actually causes Apple to dethrone Hewlett-Packard from the top PC vendor spot. Boosted by strong demand for its iPad tablet, Apple was the top PC seller worldwide according to the UK-based Canalys, which counts tablets 7-inches or larger as PCs. During the second quarter of 2012 Apple sold 17 million iPads and 4 million Macs.
Still, regardless of which company is considered the top vendor, the fact is that the outlook for the rest of the year is likely slowing demand for traditional PCs.
The post-PC era is here. Death of the PC as the default computing choice for most is a matter of when, not if.