One factor setting the project apart from earlier efforts to create inexpensive computers for education is the inclusion of a wireless network capability in each machine.

The project leaders say they will employ a variety of methods for connecting to the Internet, depending on local conditions. In some countries, like Libya, satellite downlinks will be used. In others, like Nigeria, the existing cellular data network will provide connections, and in some places specially designed long-range Wi-Fi antennas will extend the wireless Internet to rural areas.

When students take their computers home after school, each machine will stay connected wirelessly to its neighbors in a self-assembling "mesh" at ranges up to a third of a mile. In the process each computer can potentially become an Internet repeater, allowing the Internet to flow out into communities that have not previously had access to it. <...>

Each machine will come with a simple mechanism for recharging itself when a standard power outlet is not available. The designers experimented with a crank, but eventually discarded that idea because it seemed too fragile. Now they have settled on several alternatives, including a foot pedal as well as a hand-pulled device that works like a salad spinner. <...>

The project now has tentative commitments for three million computers and will begin large-scale manufacturing when it reaches five million with separate commitments from at least one country each in Africa, Latin America and Asia. Based on current negotiations, Mr. Negroponte says he expects that goal to be reached by mid-2007.

It got a significant boost on Nov. 15 when the Inter-American Development Bank signed an agreement to supply both loans and grants to buy the machines.