Microsoft provided on Friday more details about the Windows 8 OS upgrade program for consumers who buy Windows 7 PCs, clarifying certain dates, offer limits, and impact on the company’s accounting.

Following are the client versions of Windows 8 and 8.1. When upgrading to Windows 8 from an existing Windows operating system via download, Windows 8 retains the same word size. For example, a 32-bit ...

(CNN) -- Upgrading to the new Windows 8 operating system is not nearly as complicated as it looks, despite Microsoft's sometimes muddled marketing. Getting used to using it is a different story. At ...