Digit Raspberry Pi , world's cheapest computer, goes past 1.5 mln units sales Digit “We're closing in on 1.5 million [sales] for something that we thought would sell a thousand,'' reveals Eben Upton, executive director of the Raspberry Pi Foundation. ''We've sold many more to children than we expected to sell, but even more to adults … World's cheapest computer gets millions tinkering Inquirer.net The Worlds Cheapest Computer Cross Sales of 15 Million Siliconindia.com all 3 news articles