The computing applications of Nanotech are, also, virtually unlimited. Computer hardware companies such as AMD and Intel are constantly striving to make the circuitry in their chips smaller and smaller - something which Nanotech scientists are also doing in trying to manipulate matter on the atomic scale. A computer constructed on the atomic level would be able to contain a huge amount of computing power in a tiny area.
Current technology is a long way of widescale manipulating of atoms. While atoms can be manipulated on the atomic scale relatively easily it is a slow and expensive process that would take many weeks to manufacture just one processor - an unacceptable rate for such a demanding market.