Most chepest laptop is cost $100 .Nicholas Negroponte, the co-founder of the Media Lab at the Massachusetts Institute of Technology, detailed specifications for a $100 windup-powered laptop targeted at children in developing nations.Negroponte, who laid out his original proposal at the World Economic Forum in Davos, Switzerland, in January, said MIT and his nonprofit group, called One Laptop Per Child, is in discussions with five countries–Brazil, China, Thailand, Egypt and South Africa–to distribute up to 15 million test systems to children. The One Laptop per Child (OLPC) Association focuses on designing, manufacturing, and distributing laptops to children in lesser developed countries, initially concentrating on those governments that have made commitments for the funding and program support required to ensure that all of their children own and can effectively use a laptop.