engine - 6:38 pm on Mar 7, 2012 (gmt 0)
Apple iPad 3 With High Resolution Screen [bbc.co.uk]
Apple has unveiled a new iPad with a high-resolution screen which it terms a "retina display".
The firm said the resolution of its screen was 2048 by 1536 pixels. Chief executive Tim Cook claimed that "we are redefining the category that Apple created".
The tablet computer is also powered by a new A5X chip with improved graphics performance.
The firm also announced an upgraded TV box which can now handle 1080p video.