Apple CEO Steve Jobs talked a lot about the "post PC" world during his Worldwide Developer Conference keynote on Monday. So does that mean the Mac's importance is dwindling? Hardly. It's just that the Mac is now one more device in Apple's expanding arsenal, instead of THE device as it has been in the past.

As Phil Schiller, Apple's vice president of worldwide product marketing, pointed out when he joined Job's onstage at the WWDC keynote, the Mac is doing incredibly well and its customer base continues to grow at a tremendous pace. There are over 54 million active Mac users around the world and growing.

The last fiscal quarter saw the PC market actually shrink 1% year-over-year, while the Mac grew 28 percent. The Mac has outgrown the industry every quarter for the past five years.

In fact, in total revenue for fiscal 2010, the Mac accounted for $1,846 billion in revenue compared to $957 billion for the iPod, $3,007 billion for the iPhone, and $831 billion for the iPad. The Mac will certainly change and evolve.

But if you want the most processing bang for your buck, if you need the biggest screen to work with, if you need the most storage, if you want to play the most powerful games, you're gonna need a Mac, not an iOS device.

-- Dennis Sellers