Next generation Windows computers may deliver a direct computing experience , which means that the machines could also function as what might be the equivalent of special purpose devices, while also being fully-fledged PCs.

A Microsoft patent describes the “Direct Computing Experience” in the company’s vision, noting that a Windows platform could be tailored to run in specific modes, different from the general purpose operating mode. (via BeingManan)

This will require nothing more than a special actuation mechanism coupled to the computing device, in concert with the necessary detection sensors.

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You could have a docking system that could sync and share resources, adding CPU, RAM, other peripherals.
Print from your phone or refrigerator.