This is why I love Silicon Valley. I've given dozens of speeches about our book, "Age of Context," and only after speaking at PARC (Palo Alto Research Center, which is where Steve Jobs got the ideas for the original Macintosh) did a guy come up to me with a fist full of new small computers.
These things don't just have their own ARM processor on them, but a radio and some memory as well, along with a couple of sensors. They are coming in 2014 to enable new kinds of "things." What kinds of things? Well, your shirt might have a computer built into it in the future.
"What about battery?" I asked.
Jeremy Walker, CEO of Iota (these are his hands and his computers) says that they already have the ability to generate power by movement or through solar (the generator would be on a separate chip).
What was really mind blowing is that after he showed me these, he said "and here's our prototypes coming in 2015." Another hand, but these computers were less than half the size of the ones in the photo below.
http://www.iotacomputing.com/ has more on this interesting new startup.