In a ZiffDavis Wireless article, author Ross Rubin talks about full OS in small packages. Ultra-personal computers aren't available yet, almost at the edge of being vapourware. But we're closer than you think.
"I started writing this column on a computer running Windows XP Professional, but also on a handheld with no desk or other flat surface to support it. That paradox is provided by the namesake computer of Tiqit, Tiqit is neither the first nor most recent company to try to shrink the PC to its practical limits, but it may be the most successful and indeed only choice for something near its dimensions when it ships in the U.S. later this year."