Thursday, 8 November 2012

apple mac book

The MacBook is a brand of Macintosh notebook computers manufactured by Apple Inc. from 2006 to 2011. It replaced the iBook series and 12-inchPowerBook series of notebooks as a part of the Apple–Intel transition. Positioned as the low end of the MacBook family, the Apple MacBook was aimed at the consumer and education markets.^[3] It was the best-selling Macintosh in history, and according to the sales-research organization NPD Group in October 2008, the mid-range model of the MacBook was the single best-selling laptop of any brand in US retail stores for the preceding five months.^[4]

There have been three separate designs of the MacBook: the original model used a combination of polycarbonate and fiberglass casing that was modeled after the iBook G4. The second type, introduced in October 2008 alongside the 15-inch MacBook Pro, used a similar unibody aluminumcasing to the 15-inch Pro, and was updated and rebranded as the 13-inch MacBook Pro at the 2009 Apple Worldwide Developers Conference in June 2009.^[5] A third design, introduced in October 2009, used a unibody polycarbonate shell as aluminum is now reserved for the higher-end MacBook Pro. On July 20, 2011, the MacBook was quietly discontinued for consumer purchase in favor of the new MacBook Air.^[6] Apple continued to sell the MacBook to educational institutions until February 2012.^[7]^[8] The MacBook has effectively been superseded by the MacBook Air.