By Joel Stonington

Here Today, Obsolete Tomorrow

All too often, the hottest devices and coolest gadgets of the moment are dusty in the marketplace before the ink is dry on the receipt. And the pace of replacement is getting faster every year. Indeed, there are so many game-changers in the world of technology that the death knell is sounding on many a device that we use every day.

Click here to see 20 technologies on the way out.