Although personal computers were still a few years off at the time of his death 28 years ago, John Lennon can now be seen in a new television campaign that supports "One Laptop per Child." Through the use of digital technology, Lennon posthumously supports an initiative to deliver tough, solar-powered XO laptop computers to the world's poorest children.

"Imagine every child, no matter where in the world they were, could access a universe of knowledge," says a voice and video image of Lennon. "They would have a chance to learn, to dream, to achieve anything they want." In a variation on the lyrics to his 1971 classic 'Imagine,' the digitized Lennon continues: "I tried to do it through my music, but now you can do it in a very different way. You can give a child a laptop, and more than imagine, you can change the world."

Lennon's widow, Yoko Ono, approved the public-service announcement, which began airing on Christmas Day. The commercial will be shown on donated broadcast and cable television time. The One Laptop per Child Foundation was founded in 2005 at Massachusetts Institute of Technology. It started producing the XO laptop in late 2007 at a manufacturing cost of less than $200 per machine.