Acer on Tuesday entered the tablet PC market, announcing that it will launch two Android tablets and a third running Windows 7 in early 2011. One Android tablet will have a 7-inch screen; the other will have a 10.1-inch screen. The Windows tablet will also have a 10.1-inch screen. The company has also unveiled a dual-screen tablet concept called the “Iconia.” “The media tablet market is expected to take off in the next few years, and major PC vendors are trying to get in,” Gartner analyst Mikako Kitagawa told TechNewsWorld.