Ipad

t's impossible to walk the floor at this year's International Consumer Electronics Show without stumbling across a multitude of keyboard-less touch-screen computers expected to hit the market in the coming months. With Apple estimated to have sold more than 13 million iPads last year alone, the competition is clearly for second place, but even that prize is worth pursuing.

Technology research firm Gartner Inc. expects that 55 million tablet computers will be shipped this year, most of them still iPads, but there will be room for rivals to vie for sales of the remaining 10 million to 15 million devices.

A bevy of consumer electronics makers, including major names such as Motorola Mobility Inc., Toshiba Corp. and Dell Inc., showed off their tablets in Las Vegas at CES, betting 2011 will be the year the gadgets finally take off.

Companies tried for years to popularize tablets, but the frenzy began only with the release of the iPad in April. Now companies whose names don't include the word "Apple" are doing everything they can to differentiate themselves from the tablet front-runner.

They're adding bells and whistles the iPad doesn't yet have — such as front and back cameras for video chatting and picture taking and the ability to work over next-generation 4G data networks — in hopes of taking on the iPad, or at least carving out a niche.

Motorola's Xoom sports a screen that measures 10.1 inches diagonally — slightly larger than the iPad's — and dual cameras for video chatting and taking high-definition videos.

It will also include the upcoming Honeycomb version of Google Inc.'s Android software. Honeycomb has been designed for the larger touch screens on tablets; current versions of Android, used in many of the tablets at CES, are meant more for the smaller touch screens on smart phones.

For example, Gmail on a Honeycomb tablet shows a list of e-mails in one column and the body of the one you're reading in a second column. On a current Android phone, you'd only see one column at a time.

Motorola, at least, is confident that its offering is more full-featured than the iPad.