Having learned its lesson the hard way  with Windows Vista, Microsoft offered assurances Thursday that its  upcoming Windows 8 operating system won't require users to buy a new PC.
"We've  extended the trend we started with Windows 7, of keeping our system  requirements either flat or reducing them over time. So Windows 8 will  be able to run on a wide range of machines because it will have the same  system requirements or lower" as Windows 7, said Michael Angiulo, the  Microsoft executive who showed the new software at a press event in  Taipei on Thursday.
"Another  thing we did is build intelligence into Windows 8 to adapt the user  interface based on what hardware you have. So whether you're upgrading  or buying a new PC, Windows will adapt itself for your hardware," he  said.
The  new OS is designed to be touch-enabled, so people without touch screens  obviously won't get all the benefits of the new OS. It will also work  with a wider variety of sensors for detecting things like motion and  proximity, and those sensors will not be present in existing PCs.
But  Angiulo said the new interface, which has large colored icons and  resembles Windows Phone 7, can still be navigated smoothly using a mouse  and a keyboard. The page up and page down buttons can move through the  application tiles on the screen, a mouse click will open applications,  and the Windows shortcut key on a keyboard will take users back to the  desktop.
To  prove the point he showed Windows 8 running on a handful of existing  PCs, including a Samsung Series 9 laptop and an L Series Sony Vaio.
"When  you're reimagining a system that a billion people around the world use  it's a big responsibility," Angiulo said. "Windows 8 is for hundreds of  millions of computers with all different screen sizes, whether they're  touch-enabled or not. Windows 8 is an upgrade for the entire ecosystem  of PCs."
It's  an important message for Microsoft to get across. If people believe  they need to buy a new PC to run Windows 8 it would slow the transition  to the new OS and hurt Microsoft's business.
Still,  there are features in Windows 8 that won't work with existing hardware,  and Microsoft is being more prescriptive than usual about how hardware  makers should design their PCs for the new OS.
The  optimal screen will have 16:9 aspect ratio and minimum resolution of  1366 by 768 pixels, Angiulo said. A 1024x768 display will also be able  to show the new interface, he said. But a netbook with a low-resolution  screen will have to switch to the standard desktop mode, he said.
Microsoft  learned its lesson about system requirements with Vista. Many PCs in  use at the time wouldn't run the OS properly. People reported a lousy  experience with the software and it became about the most unpopular OS  in Microsoft's history. The company will be keen not to let that happen  again.
