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Pedion
Developer	Mitsubishi Electric; Hewlett-Packard;
Manufacturer	Mitsubishi Electric
Type	Subnotebook
Release date	1998; 27 years ago
CPU	Pentium MMX at 233 MHz
Memory	64 MB of RAM

The Pedion was a subnotebook computer developed by Mitsubishi Electric with Hewlett-Packard in 1998.^[1]^[2] Hewlett-Packard marketed a rebadged version of the Pedion under their OmniBook brand of notebooks and subnotebooks, called the OmniBook Sojourn, in the same year.^[3]^[4]^[5] Mitsubishi's subnotebook is named after the Greek word pedion (πεδίον), meaning "plain", "flat", "field".

At 0.7244 inches (18.40 mm) thick, the Pedion was the thinnest notebook computer in the world, even thinner than 2008's MacBook Air 0.75 inches (19.05 mm); the MacBook Air was 4 mm at its thinnest point, however. The Pedion included a Pentium MMX processor clocked at 233 MHz, 64 MB of RAM, and a 1 GB hard disk drive.^[6]

The Pedion was the first laptop on the market to feature an island-style keyboard—a design for laptop keyboards in which they contain scissor-style switches with low travel and simplified flat keycaps separated from each other by a plastic bezel.^[7]^[8] This style of keyboard technology would not proliferate on laptop keybords until nearly a decade later.^[9]

Mitsubishi ceased production and withdrew the notebook from the market due to "mechanical problems".^[1]

References

^ ^a ^b Kanellos, Michael (2008-01-15). "MacBook Air: Not the thinnest notebook ever". CNET News.com. Archived from the original on 2018-01-18. Retrieved 2008-01-15.
^ Kanellos, Michael (2008-01-16). "Update: Thinnest notebook crown belongs to Sharp". CNET News.com. Archived from the original on 2018-09-13. Retrieved 2008-01-16.
^ Kvitka, Andre (March 30, 1998). "HP's Sojourn reaffirms 'thin is in'". InfoWorld. 20 (13). IDG Publications: 1, 99 – via Gale.
^ Staff writer (November 23, 1998). "Sojourn ends its travels". PC Week. Ziff-Davis: 6 – via Gale.
^ HP OmniBook Sojourn Troubleshooting Guide (PDF). Hewlett-Packard. 1998. p. 1-3. Archived from the original (PDF) on December 7, 2008.
^ "Mitsubishi Pedion review". Alphr. Retrieved 2018-07-19.
^ Crothers, Brooke (March 16, 2008). "MacBook Air rivals, past and present". CNET. Red Ventures. Archived from the original on November 17, 2021.
^ Forbes, Jim (1998). "Pedion Proves Thin Is In". Windows Magazine. 9 (3). CMP Media: 128. Archived from the original on 2023-03-09. Retrieved 2021-11-17 – via Google Books.
^ "What the Vaio Z says about Sony's little design problem". November 15, 2011. Archived from the original on June 21, 2020. Retrieved May 31, 2020.