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By Jim Donovan

By Jim Donovan

PHILADELPHIA (CBS) — A new survey shows that sales of tablets and e-readers surged during the holiday season.

One in five Americans now own a tablet, according to a new report from the Pew Internet and American Life Project. And those numbers are only going to grow.

Tablets and e-readers were hot sellers during the holidays, with the number of Americans who own them doubling between December and January of this year.

The lower price range of Amazon’s Kindle line, Barnes and Noble’s Nook products, and a variety of other less-expensive tablets offer an alternative to Apple’s iPads, which put tablets on the map in 2010.

But if you’re looking to purchase a tablet or e-reader, keep a few things in mind.

First, how much do you want your device to do? E-readers are designed chiefly for reading books, magazines and newspapers, but some will allow you to play music or surf the web, too.

If you need more than that, consider a tablet.

Then there’s portability. What’s the best size for you? Are you going to use your device only at home, or will you also take it along when you travel?

As for wireless capabilities, Wi-Fi should be enough for your e-reader, but tablet owners might consider a cellular plan so that they can use their device wherever, whenever.

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