Rory Cellan-Jones visits a school in Kigali where children are using computers supplied by the One Laptop Per Child project.
The green laptops have been developed at the Massachusetts Institute of Technology for use in developing countries.
They are loaded with software designed to limit energy use so that they can be used for many hours without requiring their batteries to be recharged.
They can also link to one another via wi-fi to form a network that connects to a distant internet link.
This video was filmed on a mobile phone.