Virtually every device you use—from the one you're using to read this to the pocket calculator growing dust in the back of your desk—relies on the same basic technology: circuits containing many tiny transistors that communicate with each other using electrons. We've come a very long way since the room-sized computers of the 1950s, but as computing gets smaller, faster, and more complicated, we get closer to hitting a wall. There's a physical limit to how powerful traditional computers can get. That's why scientists are turning to completely new forms of technology for future computers.
The first in our three-part series on the future of computing involves one form you're familiar with—it's sitting right inside your skull.