Apple says it's introducing a laptop with a super-high resolution "Retina" display, setting a new standard
for screen sharpness.

The new MacBook Pro will have a 15-inch screen and four times the resolution of previous models, Apple CEO Tim Cook told developers at a conference in San Francisco.

Apple already uses "Retina" displays -- with individual pixels too small to be distinguished by the naked eye -- in its latest iPhones and iPads.

The new MacBook will cost $2199 and up, and is part of a general revamp of Apple's personal computer line announced Monday.



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