Apple is widely expected to unveil a major update this week to OS X Lion, its operating system for desktop and laptop computers. Microsoft, meanwhile, is working on an even bigger overhaul of Windows, with a version called Windows 8.
Both new operating systems reflect a tectonic shift in personal computing. They incorporate elements from mobile operating systems alongside more conventional desktop features. But demos of both operating systems suggest that users could face a confusing mishmash of design ideas and interaction methods.
Windows 8 and OS X Lion include elements such as touch interaction and full-screen apps that will facilitate the kind of "unitasking" (as opposed to multitasking) that users have become accustomed to on mobile devices and tablets.
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