Thanks to today's technology, the Beatles' late lead singer John Lennon is being featured in a new TV advertisement for charity, twenty-eight years after his death.

The singer's widow, Yoko Ono allowed the use of voice and images of her husband for One Laptop Per Child Foundation, which is campaigning to supply computers to children in the developing world. The commercial used the same digital technology as in other advertisements that brought back deceased celebrities like Jim Henson and Fred Astaire.

A digitally created image of Lennon can be seen in the commercial, which began broadcasting on Thursday, making a reference to one of his biggest solo hits, "Imagine," as he delivers the message.

"Imagine every child, no matter where in the world they were, could access a universe of knowledge," he states. The charity, which was set up in 2005 by Nicholas Negroponte, aims to deliver tough, solar-powered computers to the world's poorest children. The organization started making the special laptops, which cost under $200, late last year.

"They would have a chance to learn, to dream, to achieve anything they want. I tried to do it through my music, but now you can do it in a very different way."

In addition to television networks, the commercial can also be watched on YouTube.com.

"You can give a child a laptop and more than imagine, you can change the world," the musician adds.