IBM researchers make 12-atom magnetic memory bit new

Now, IBM say that we need a milions of atoms to store a bit in a hard disc. They belive in the smallest world magnetic memory bit. This technology allows to create a a very very long hard discs.The physical limit is the world of atoms. Currently they achieve put information in only 12 atoms. In the future, they want to put the maximum information with the minimum of the atoms.

http://www.bbc.co.uk/news/technology-16543497