Mitsubishi Pedion

The Mitsubishi Pedion was an ultra-thin subnotebook computer that Mitsubishi Electric developed together with Hewlett-Packard in 1998. Hewlett-Packard sold a rebadged version in the same year under its OmniBook line as the OmniBook Sojourn. The name comes from the Greek word pedion, meaning plain, flat or field. At about 18.4 millimetres thick it was described as the thinnest notebook computer in the world, thinner than the 2008 MacBook Air at its thickest point. It carried a Pentium MMX processor clocked at 233 MHz, 64 MB of memory and a 1 GB hard disk. It is also recorded as the first laptop on the market to use an island-style keyboard, a scissor-switch design with flat keycaps separated by a plastic bezel that did not become common for nearly a decade. Mitsubishi later stopped production and withdrew the machine from sale, citing mechanical problems.