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An ultra-mobile PC (ultra-mobile personal computer or UMPC) is a small form factor version of a pen computer, a class of laptop whose specifications were launched by Microsoft and Intel in spring 2006. Sony had already made a first attempt in this direction in 2004 with its Vaio U series, which was however only sold in Asia. UMPCs are smaller than subnotebooks, have a TFT display measuring (diagonally) about 12.7 to 17.8 cm (5 to 7 inch screen), are operated like tablet PCs using a touchscreen or a stylus, and can also have a physical keyboard. There is no clear boundary between subnotebooks and ultra-mobile PCs.
The first-generation UMPCs were simple PCs running Linux or an adapted version of Microsoft's tablet PC operating system. With the announcement of the UMPC, Microsoft dropped the licensing requirement that tablet PCs must support proximity sensing of the stylus, which Microsoft termed "hovering".
Second-generation UMPCs use less electricity and can therefore be used longer (up to five hours) and also support Windows Vista.
Originally codenamed Project Origami, the project was launched in 2006 as a collaboration between Microsoft, Intel, Samsung, and a few others. Despite prediction of the demise of UMPC device category according to CNET, it continues to be in existence, although it has largely been supplanted by tablet computers  as evidenced by the introduction of Apple iPad, Google Android, BlackBerry Tablet OS, Nokia's cancelled MeeGo, and Microsoft Surface.
In February 2006, a viral marketing campaign was quietly launched for the UMPC, then still referred to by its codename, "Project Origami". Speculation over "what is Origami?" and pictures of the rumored prototypes were passed around and covered extensively on Engadget, Scobleizer, Thatedeguy and other technology sites. Finalization of the Origami project was announced in time to keep the excitement level high for CeBIT.
Much speculation positioned Origami as a portable gaming device that would directly compete with Nintendo's DS and Sony's PSP. This rumor gained credibility after videos were leaked showing Halo: Combat Evolved being played on a UMPC. While the movie was quickly taken down from its original source, mirrors exist on many other sites.  Later in the week, the Associated Press confirmed that "Origami" was actually to be a regular PC with "limited gaming capabilities".
First two devices
The first UMPCs on the market were AMtek's T700 and Samsung's Q1.
The AMtek T700 is sold in the USA as the TabletKiosk eo v7110, agoPC ago7, and Azentek GB-810, in Europe as the PaceBlade EasyBook P7 and its Label Origami, and in Australia the TabletKiosk eo v7110 and the Pioneer DreamBook UMPC 700 and in Japan the PBJ SmartCaddie.
In September 2006, Raon Digital launched the Vega running an AMD Geode LX800, 256 MB of RAM, and a 30 GB hard drive. It has a 4.3" screen, a 500 MHz processor, and a battery life of 5.5 hours. It runs Microsoft Windows XP Home Edition and retails for 680,000 Korean won (U$700–750). However it does not have WiFi capability.
In early October 2006 Samsung quietly launched the Q1B, bringing the Ultra Mobile platform closer to the vision that Microsoft created. The Q1b features a VIA C7-M ULV processor running at 1 GHz, up to five hours of battery life, and a lower price point than the Samsung Q1. It also has optional modules for HSDPA or WiBro for ubiquitous internet connectivity in major cities around the world. Also a new UMPC on the market is the T770 from AMtek. It is a Windows Vista powered device with a 1200 MHz processor and 1024 MB of RAM. It has a 40 GB hard disk (or 60 GB on another cheaper brand, and also the same device) and a 7" screen. It is available for 899 € (the cheaper brand is 849 €).
In 2007, Bill Gates introduced the OQO model 02 in his keynote at CES 2007. The OQO model 02 is now shipping with a 5-inch/12.7-cm screen, EV-DO WWAN, Bluetooth, 802.11 a/b/g WiFi, running Microsoft Windows XP and Vista. OQO has won quite a few computer and design awards, including Guinness World Records recognition of OQO model 02 as the world's smallest fully functional computer (where a 'computer' means ability to run Windows).
In August 2007, Raon Digital launched their second UMPC 'Everun' which has built in WiFi and HSDPA. It uses the AMD Geode (processor) LX900. Everun is introduced as the UMPC with the longest battery life—as much as 6–7 hours with its standard battery and 12 hours with a large battery. Unlike its previous model 'VEGA', Everun has a full qwerty key pad, aesthetically similar to a Smartphone, which appeals to the mobile commuter.
Wibrain launched the second models of B1L series with Ubuntu Linux on February 27, 2008. Their starting price is around $500.00. Wibrain UMPC features a 4.8 inch touch enabled LCD screen at 1024x600 resolution, a 1.0 GHz or 1.2 GHz VIA C7M CPU, 512 MB or 1 GB of memory, a 30 GB or 60 GB harddisk, a full qwerty keyboard and built-in WiFi (802.11b/g).
Around the same date, CHIP.DE featured an article about the R2H and R50A from ASUS, which runs a Windows Tablet PC edition OS on its Intel Celeron system. It has a VGA-TV output, GPS, 3 USB ports, 60 GB hard drive and 512 MB RAM. It also offers wired/wireless network capabilities. In Germany, its current price is €939 at Amazon.de.
In September 2008 Nova Mobility announced its second generation Side Arm 2 Industrial UMPC. This unit is designed around the Intel Atom processor and is the first industrial grade UMPC released on that platform. It has GPS, WiFi and Bluetooth standard and 3G as an option. You can also have EVDO via the PCI Express card slot in the top of the unit. Two USB ports, a 7" touch screen and one hand-typeable QWERTY keyboard are available. The device weighs less than 2 lbs and offers up to ten hours of battery life.
Viliv introduced the S5 in mid-2009 followed by X70 models. In July 2010 the Viliv N5 was introduced. The N5 is a small notebook-style UMPC whereas the S5 and the X70 are tablets. They all feature GPS, Wifi, Bluetooth, 3G availability, SSD options with Intel Z520 and integrated GMA500 graphics with hardware acceleration for H264 HD video playback. The starting prices are around US$ 599 with battery life of five hours or longer.
Ocosmos launched the OCS1, a gaming UMPC with the latest CPU from Intel, which features Windows 7 Home Premium and front- and rear-facing cameras.
Project Origami defines a specification for computers with a 20 cm (8-inch) or smaller touch sensitive screen at a minimum resolution of 800 × 480. To make it more suited for the small form factor, Windows XP Tablet PC Edition was originally used with slight tweaks to the interface and a software add-on known as the Touch Pack Interface to make the interface more suitable for use of a stylus as well as hands. When the UMPC was disclosed at CeBIT 2006, Samsung, ASUS, and Founder had near-complete devices on display. Recently, the UMPC initiative has included later Windows versions.
UMPCs with Windows XP installed are able to run any software that has been written for the Windows XP platform, though the small form factor often mandates some changes to the interface. The standard Windows XP interface is the default, though a choice of having an interface more suited for the small form factor is available with the Touch Pack Interface. As the units are so small, many UMPCs do not feature a physical keyboard, but an on-screen virtual keyboard provided in the Touch Pack Interface (such as the DialKeys, below). Also, since the device has standard USB 2.0 connectivity, external keyboards and mice can be attached.
UMPC devices include either Intel or VIA processors, 256 MB to 2 GB of RAM, and a 30 to 160 GB hard disk, depending on the manufacturer. Other ultra mobile devices feature AMD or Transmeta Crusoe CPUs. Ultra-mobile PCs can also feature Global Positioning System (GPS) devices, webcams, fingerprint readers, stereo speakers, TV tuners, and memory card readers. Bluetooth, Wi-Fi, Ethernet and WWAN connections are sometimes included as well.
UMPCs have enough processing power to support audio, video, and gaming, in addition to having rich support for browsing the internet as well as for other communication and networking applications. Windows Media Player is included, with a special skin designed to provide a better experience on the small screen. The devices also feature DirectX 9–class graphics, and all applications available for standard Tablet PCs are expected to be compatible.
In 2006, prices of UMPCs were approimately $1000 in the United States, and although Microsoft made efforts to push down prices for the 2006 holiday season, they were not expected to reach the US$500 range market analysts felt was necessary to achieve mainstream success.  Most UMPCs are now available with Windows 7, although many new UMPCs come with the option to have XP or Linux installed, as some devices are too sluggish to run the Vista kernel on which 7 is based. One example of this is the Samsung Q1 Ultra which originally launched with only Vista versions, but subsequently launched Windows XP versions. This is largely because UMPC hardware at the time was too close to the minimum Vista requirements to be comfortably used.
A new text input method was implemented for ultra-mobile PCs. Consisting of two rings of keys around the lower corners of the screen, DialKeys is intended for use with the thumbs.
There are currently several companies developing accessories exclusively for the 7" UMPC platform. These include carry cases, screen protectors, styli, protective bump cases and docking stations. In addition, several prototypes of "mounting solutions" have been previewed which permit the UMPC device to be mounted in the car, on the wall or attached to an adjustable arm. User interface software that enables UMPC's to become portable "infotainment" devices is evolving. There are touch-friendly, voice-controlled, user interface software platforms designed to run on Windows XP and Vista-based UMPCs that allows users to control Windows without the need of a mouse and keyboard.
- Microsoft Office OneNote
- GO Corporation
- Agilix GoBinder
- Mobilis – Protectis Range
- StarDraw Control
- Comparison of subnotebooks
- Mobile Internet device
- Picoprojector; together with a webcam and laser projector, this can be used to eliminate keyboard and screen of a UMPC, making the UMPC significantly smaller.
- Spelled lower case because it's a type of computer, not a specific product, see Microsoft's description.
- 27. Sony PSP Go (2009-?) - The decade's 30 biggest tech flops (photos) - CNET Reviews
- iPad vs. netbook: direct cannibalization and collateral damage, see .
- Origami Project - YouTube
- What is the Origami Project? « Scobleizer — Tech geek blogger
- What is Origami? Microsoft's Origami Project | Thatedeguy
- Origami Project leaked video- YouTube
- "Microsoft Unveils Project Origami". Yahoo! News. 9 March 2006.
- "TabletKiosk Now Shipping Sahara Slate PC i440D with Windows Vista" (Press release). TabletKiosk. March 20, 2007.
- Welcome to Wibrain!
- OQO brings the OQO model e2 to Europe
- Asus launches the netbook revolution with the EEE PC
- Nova Mobility Systems Announces NEW Side Arm 2 UMPC
- Viliv X70 EX UMPC Full Review with Videos
- Engadget - Hands-on with the WiBrain B1 UMPC
- "Microsoft Preps Ultramobile PC for Second Chance". eWeek Channel Insider. June 19, 2006.
- "New Samsung Q1 Ultra models ditch Vista for XP". Pocketables. August 28, 2007.
- Article about using a UMPC to control a whole house home audio system
- Barry J. Doyle, TabletPCReview staff (1 December 2006). "TabletKiosk eo v7110 UMPC Review". TabletPC Review. TechTarget. Retrieved 2013-08-10. "Hot on Samsung's heels though was TabletKiosk busting a snappy roll out of the eo v7110 UMPC."
|Wikiversity has learning materials about Improved UMPC design|
|Wikimedia Commons has media related to Ultra-Mobile PCs.|
- Microsoft's official ultra-mobile PC website
- UMPC comparison website
- Annotated bibliography of references to handwriting recognition and pen computing
- Notes on the History of Pen-based Computing (YouTube)