he first computer built entirely with carbon nanotubes has been unveiled, opening the door to a new generation of digital devices. "Cedric" is only a basic prototype but could be developed into a machine which is smaller, faster and more efficient than today's silicon models. Nanotubes have long been touted as the heir to silicon's throne, but building a working computer has proven awkward. The breakthrough by Stanford University engineers is published in Nature. Cedric is the most complex carbon-based electronic system yet realised. So is it fast? Not at all. It might have been in 1955. Read more http://www.bbc.co.uk/news/science-environment-24232896
