Microsoft CEO Steve Ballmer recently confirmed that the company will limit Windows 7 Starter, the edition expected to end up on netbooks, to systems that sport small screens and low-powered processors.

During Microsoft's annual financial analyst day July 30, Ballmer got more specific than other executives in describing the limitations computer makers must abide by if they're to install Starter on their machines. Starter is the least feature-rich edition of the operating system available worldwide, and will not be sold direct to consumers or businesses. It will be available only to OEMs, or "original equipment manufacturers," such as Acer, ASUS, Dell, Hewlett-Packard and Toshiba.

"Our license tells you what a netbook is," said Ballmer at the Microsoft-hosted day with Wall Street analysts. "Our license says it's got to have a super-small screen, which means it probably has a super-small keyboard, and it has to have a certain processor and blah, blah, blah, blah, blah."

Although other Microsoft executives earlier this year said that the company would place restrictions on the kinds of processors and screen resolutions supported by Starter, Ballmer is the highest computer official yet to spell out Starter's limitations, if only in the broadest terms.

Full story: Computerworld