Acer, long known for its laptop lines, has decided to throw its hat into the tablet ring. Specifically, the company on Tuesday announced three new tablets: a 7-inch and a 10.1-inch Android-based tablet, and a 10.1-inch Windows-based tablet. As of press time, there were no official model names.

The 7-inch Android tablet has a touch screen with a 1,280-by-800 resolution and 16:10 aspect ratio. It also has a front-facing HD Webcam and support for HDMI. It will have a dual-core processor (no word from which chip maker), as well as Wi-Fi and 3G connectivity.

The 10.1-inch Android tablet, measuring about 13.3mm thick, sports an aluminum chassis accented with a glossy finish around the bezel. It has a capacitive touch screen, and, like its 7-inch counterpart, offers 3G and Wi-Fi connectivity. It also features a built-in HDMI port and 1080p capability. The 10.1-inch Android tablet has a unit 10-point multitouch and gyro-meter control for running and playing HD and online 3D games.

The 10.1-inch Windows tablet measures about 15mm thick and sports a high-resolution display. It will run on the next-generation AMD platform and have Wi-Fi and 3G connectivity. It sports two 1.3-megapixel cameras—one rear and one facing front—a strange design choice. Why not just have a camera that can swivel, as with the Dell Inspiron Duo? Unlike its Android-based counterparts, the 10.1-inch Windows tablet comes with a docking device that include a full-size keyboard and additional connectivity options.

According to Acer, the 10.1-inch Windows tablet will be available this coming February, while the two Android-based tablets will be rolled out in April 2011. Prices are still to be determined.

Also on Tuesday, Acer unveiled an unnamed, 4.8-inch smartphone for AT&T, a dual-screen laptop it called Iconia, a media-sharing system known as Clear.fi, and a digital platform known as "alive." For more details, see the slideshow below.