Apple Inc. (NASDAQ: AAPL; NYSE: AAPL; previously Apple Computer, Inc.) is an American multinational corporation that designs and markets consumer electronics, computer software, and personal computers. The company's best-known hardware products include the Macintosh line of computers, the iPod, the iPhone and the iPad.
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Microsoft Corporation (NASDAQ: MSFT) is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions. Established on April 4, 1975 to develop and sell BASIC interpreters for the Altair 8800, Microsoft rose to dominate the home computer operating system market with MS-DOS in the mid-1980s, followed by the Microsoft Windows line of operating systems.
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Google Inc. is an American multinational public corporation invested in Internet search, cloud computing, and advertising technologies. Google hosts and develops a number of Internet-based services and products, and generates profit primarily from advertising through its AdWords program. The company was founded by Larry Page and Sergey Brin, often dubbed the "Google Guys", while the two were attending Stanford University as PhD candidates.
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The Samsung Group is a South Korean multinational conglomerate corporation headquartered in Samsung Town, Seoul, South Korea. The Samsung Group comprises numerous international affiliated businesses, most of them united under the Samsung brand including Samsung Electronics, Samsung Heavy Industries, Samsung Engineering, Samsung C&T and more.
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HTC Corporation (TWSE: 2498), formerly High Tech Computer Corporation, is a Taiwanese manufacturer of smartphones. The company initially made smartphones based mostly on Microsoft's Windows Mobile operating system (OS) software, but in 2009 it began to shift its core focus away from Windows Mobile devices to devices based on Android OS, and in 2010 to Windows Phone OS as well.
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Nokia Corporation (OMX: NOK1V, NYSE: NOK, FWB: NOA3) is a Finnish multinational communications corporation that is headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki. It is the world's largest manufacturer of mobile phones: its global device market share was 23% in the second quarter 2011.
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Nvidia (NASDAQ: NVDA; /?n'v?di?/ in-vid-ee-?) is an American global technology company based in Santa Clara, California. The company invented the graphics processing unit (GPU) in 1999. Their parallel processing capabilities provide researchers and scientists with the ability to efficiently run high-performance applications, and they are deployed in supercomputing sites around the world.
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Electronic Arts, Inc. (EA) (NASDAQ: ERTS) is a major American developer, marketer, publisher and distributor of video games. Founded and incorporated on May 28, 1982 by Trip Hawkins, the company was a pioneer of the early home computer games industry and was notable for promoting the designers and programmers responsible for its games. It is one of the largest video game publishers in the world.
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(Disclaimer: Description of each company listed here is original from Wikipedia.org)





