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NEW YORK (TheStreet) -- The latest PC maker promising to enter the market dominated by Apple's (AAPL) iPad, Taiwanese giant Acer announced a handful of mobile devices Tuesday, including two Google (GOOG) Android tablets.

The Androids, featuring 7- and 10-inch screens, are slated for release in April 2011. A third tablet, a 10-inch gadget running on



Windows operating system, will be rolled out first, in February.

Acer did not provide information about pricing or carrier distribution for the tablets and the products have not been officially named, the company said.

Acer has become the second most popular PC maker globally -- behind



-- thanks to strong sales of its netbooks, according to research shop Gartner. However, some analysts worry that tablet devices could eat into PC firms' netbook sales.

Sales of tablet devices are expected to reach 19.5 million by 2010, and could surpass 208 million units in 2014, according to Gartner.

For updates on tablets with the potential to grab some market share from the iPad, read on.

Dell Inspiron Duo

Launch: Ships December 15



is following up its recent solid

third-quarter earnings

report with the official launch of its big tablet. The company is now accepting pre-orders for the

Inspiron Duo

, a netbook/tablet hybrid with a 10-inch swivel screen.

The $549 device, which hits the market four months after Dell's first foray into the tablet space -- the 5-inch

Streak mini-tablet

-- will run on Microsoft's Windows 7 operating system and is powered by a dual-core



Atom processor.

Dell's mobile march will continue over the next few weeks. Its 4.3-inch Venue Pro smartphone, already

in use by Dell employees

, should launch commercially before year's end.

HP Slate

Launched: October 2010

HP execs didn't say much about the company's mobile device strategy during its

fourth-quarter earnings

conference call Monday, but recent reports show that the new $800 HP Slate is sold out; apparently there's a

six-week waitlist

to get one, which could be due to low manufacturing numbers.

Aimed at business users who live by Microsoft Office products, the Slate's 8.9-inch touchscreen runs Windows 7, has an 1.86-gigahertz Atom processor, a 3-megapixel camera on the back and a forward-facing VGA camera for video calls.

Samsung Galaxy Tab

Launched: November 2010

Though well behind the iPad in terms of popularity and place in pop culture, sales of the 7-inch

Galaxy Tab

Android are humming along, recently topping 600,000 units worldwide, according to the

Korea Times


More consumer-oriented than corporate, the

Galaxy Tab

sells at the top four U.S. telcos and goes for $400 (


) to $650 (




The Tab runs on a 1-gigahertz Hummingbird processor and Android 2.2, and has proved to be suprisingly capable in

informal tests

performed by


. In terms of battery life, the Galaxy Tab went for 2 days on a single charge.

Research In Motion's PlayBook

Expected Launch: March 2011

Despite making a pop-culture cameo in an upcoming Black Eyed Peas video, the PlayBook, capitalizing on

Research In Motion's


strong corporate presence, will be aimed at business users.

Featuring a 7-inch screen, the PlayBook will support



Flash, which isn't available on the iPad. It will also reportedly sell for less than $500, where iPad pricing starts.

--Written by Olivia Oran in New York.

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