OQO

OQO was a U.S. computer hardware company that was notable for manufacture of handheld computers. Its systems possess the functionality of a tablet PC in a form factor slightly larger than a personal digital assistant (PDA). According to Guinness World Records, the "OQO" was the smallest full-powered, full-featured personal computer in 2005. The company's first version of subnotebook computer is the OQO model 01. Recently, it has been compared with the Ultra Mobile PC platform, although it was introduced before the UMPC took flight. The UPCs are capable of running slightly modified versions of Linux or other x86-based operating systems.