In Pictures: 10 really small devices that could ch...
The eyes have it
Think your smartphone is small enough? David Wentzloff has been making tiny computers for years at the University of Michigan, but his latest project is a self-contained computing device that is about 1 cubic millimeter wide. Roughly the size of a pinhead, this nano-computer has two processors, a camera and a pressure sensor as well as a wireless transmitter and antenna. The whole thing is powered by a tiny solar cell and battery pack.
It's been designed and built to be implanted into the eyes of glaucoma patients to measure and transmit their ocular pressure every 15 minutes.
In Pictures: 10 really small devices that could change the world