NEC has demonstrated one of the world’s largest multi-touch computers, powered by Windows Embedded Standard 7. The “Multi-Touch Wall” measures about 15 feet diagonally, offers resolution of 5,464 x 1,536 pixels, and employs infrared sensing, according to a DigInfo.tv report.

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NEC’s giant Multi-Touch Wall was shown off at last week’s Digital Signage Japan 2011, according to a June 16 DigInfo.tv report (embedded at the end of this story). Company spokesperson Takeshi Wada is quoted as saying the device incorporates eight thin-bezel displays controlled by a single Windows Embedded Standard 7 computer.

According to Wada, each single display measures 46 inches diagonally and has a resolution of 1,366 x 768 pixels. Thus, the eight screens collectively offer one of the world’s-biggest Windows desktops, with 5,464 by 1,536 pixels.

NEC said the Multi-Touch Wall is 4.1 meters (about 14.45 feet) wide and 1.15 meters (about 3.77 feet) high. Therefore, it measures almost 15 feet diagonally.

In the video, Wada says the displays have an ordinary glass surface, but infrared sensing was added to the array to provide two-point multitouch. Potential uses are said to be corporate showrooms, education, and product promotion.

Wada adds, “Actually this product is being installed in Microsofts new showroom. Right now, it is in exhibit form for display, but we are already finishing custom products. We will offer it to particular customers as a solution to match their needs in the future.”

No details were provided about what processor the underlying computer employs, or how many graphics cards it had to be equipped with. As we reported June 15, NEC also used the Digital Signage Japan 2011 event to unveil two Windows-powered signage modules that comply with Intel’s Open Pluggable Specification.