UMPCs

These Ultra-Mobile PCs are mobile computers with a size comparable to PDAs - they are tremendously portable. Because of their small size, they slot in a 20 cm (7 inch) or smaller touch-screen for the user to interrelate with it (as with a virtual keyboard), though some (such as the OQO Model 02) are planned with a miniature physical keyboard (a thumb board) and mouse interface. They residence lower performing, power-saving components (in comparison to larger laptops). Some of the Examples of UMPCs are the OQO Model 02 and the Sony Vaio UX Micro PC.