Microsoft has unveiled Surface – its own-brand family of tablets.
The touchscreen computers will be powered by its upcoming Windows 8 system and contain a choice of an Intel or ARM-based processor.
It allows the firm to challenge Apple’s bestselling iPad with a device that can run standard applications such as its own Office programmes and Photoshop.
But it puts Microsoft in competition with other manufacturers planning to release tablets designed for Windows 8.
The company’s chief executive, Steve Ballmer, said he had wanted to give the software “its own companion hardware”.
The devices have 10.6 inch (26.9cm) displays, built-in kickstands and are housed in magnesium cases – which the company described as the first of their kind.
The ARM-based tablets are 9.3mm (0.4 inches) thick – slightly less than the iPad – and run the Windows RT version of the new system. The Intel-based versions run Windows Pro and are thicker.
The specifications mean the Surface tablets have bigger screens than the iPad but are heavier.
A variety of accompanying covers fold out to offer a keyboard and multitouch trackpad.
The devices are also designed to work with a pen accessory using what the firm dubbed “digital ink”. When the stylus is held close to the screen of the tablet it ignores touch-input from the users’ hands and “samples” the ink at 600dpi (dots per inch).
The ARM-based version will be available with either 32GB (gigabytes) or 64GB of storage. Microsoft said they would be priced at a similar rate to other tablets using the same type of processor built by other firms.
It added that the Intel-based versions would be offered with either 64GB or 128GB of storage and would have price tags comparable to ultrabook laptops.
One tech analyst told the BBC that other hardware makers were likely to feel aggrieved by the news.
“Microsoft can offer a competitive price for these specifications as it doesn’t need to pay itself a licence for the Windows 8 software which other manufacturers will have to do, and that might make its PC and tablet-making partners unhappy,” said Carolina Milanesi, research vice president at the technology consultants Gartner.
She added that the firm appeared to have focused on a specific part of the market wanting a more powerful device than Apple’s iPad.
“They seem to be be targeting a professional audience,” she said.
“So they are going head-to-head with Apple within the corporate sector. Price will be key – these devices won’t be at the bottom end of the market. They will probably let other manufacturers fight over that space.”