Blackberry and Motorola take on iPad
High-end computer tablets are going on sale, with the aim of taking a bite out of the iPad's market.
The Motorola Xoom has a dual core processor, helping it load up web pages and play video faster than some of its rivals.
Blackberry makers RIM are launching the PlayBook.
It has its own operating system and the ability to play HD video directly into a TV.
RIM co-chief executive, Mike Lazaridis, shows the BBC's Rory Cellan-Jones why he believes it will give market leader Apple a run for its money.
Read more at dot.Rory.