One Laptop Per Child (OLPC) computers is a ''subnotebook'' - model XO-1.75 a subnotebook notebook that is smaller than the average notebook -- that's donated to developing countries at a cost of fifty dollars so , with the hope that each , every primary school child could have their own laptop to explore the world. The OLPC is very inexpensive to produce, costing developers fifty dollars($50) for everyone produced. a Touch Book - developed by Always Innovating -- is a lightweight portable device that has a detachable magnetic keyboard and the SheevaPlug - a plug computer designed to run network-based software devices are some devices that use an ARM processor.