Getting small. The title for the World’s Smallest Computer rests, for now, with a research team at the University of Michigan that built a system, complete with RAM, photovoltaics, processors, wireless transmitters, and receivers, that’s smaller than a grain of rice. It does lose all information when powered down (and it uses the tiniest bit of power). Still itty-bitty computer holds promise for things like medical research, since it is bio-compatible. So, would you like to swallow a computer?