The popularity of PC tablets like the new iPad is leading many other companies to copy and improve on this design. Intel Corp, the world's largest chipmaker, is now promoting a new type of thinner laptop that it calls the ultrabook. With this design Intel is hoping to fend off a challenge to the PC industry from Apple's iPad and other tablets. The new ultrabooks will be under an inch thick, and they feature days of battery life on standby.

They also start up in just seconds and retail for under $1,000. Intel is targeting a conversion of 40% of the consumer laptop market to the new category by the end of 2012. The iPad has been attracting consumers who are seeking a thin and affordable computer, and up to now the ultraportable devices offered by PC makers haven't been competitive due to high prices and chips that didn't deliver enough performance.