(This program is not activated at the Manhattan exhibition because it runs on a personal computer. The more limited computing capacity at the photography center also requires visitors to navigate with a mouse instead of a touch screen).
Now, four separate teams have taken a step toward achieving such "quantum speed-up" by demonstrating a simpler, more limited form of quantum computing that, if it can be improved, might soon give classical computers a run for their money.
For its part, Sharman Networks contends that KaZaA is different from Napster in at least one fundamental way: its service is a pure form of "peer-to-peer" exchange, in which the company's own computers play a more limited role in enabling the exchange of music than did the computers of Napster.
Though it is true that a quantum computer can efficiently build a superposition of an exponential number of possibilities, its access to the outcomes of those possibilities is much more limited than that of a true parallel computer.
The D-Wave machine is not a universal quantum computer, however, but a more limited "quantum annealer".
At a price of $120,000, the PDP-1 sold for a fraction of the cost of mainframe computers, albeit with vastly more limited capabilities.
MP4 is playable on most devices and computers, while FLV has more limited support.
Udacity's offerings are more limited, with a strong emphasis on science, math and computer science.
Mr Burden said the statistics were "shocking" and that he had written to the Paymaster General, Matthew Hancock, warning that the focus on "digital reform" – so that more administrative work is done online – is hurting those with limited computer access.
(Although there has been much discussion of "10,000 rupee" computers, most industry executives dismiss such machines as much more limited than PCs).
