Photo gallery: One Laptop per Child

The laptop, shown here with its Wi-Fi aerials up, uses a Wi-Fi mesh network -- because of the lack of a suitable communication infrastructure in developing countries. This ad hoc LAN is always on, even when the PC is powered down, allowing it to route traffic to other connected computers. If the battery power gets below 15 percent however, it will shut off.

Credit: © Luke Anderson/CNET Networks

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