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IBM T220/T221 LCD monitors
The IBM T220 and T221 are LCD monitors sold between 2001 and 2005, with a native resolution of 3840×2400 pixels (WQUXGA) on a screen with a diagonal of 22.2 inches (564 mm). This works out as over 9.2 million pixels, with pixel density of 204 pixels per inch (80 dpcm, 0.1245 mm pixel pitch), much higher than contemporary computer monitors (about 100 pixels per inch) and approaching the resolution of print media. The display family was nicknamed "Big Bertha" in some trade journals. Costing around $8400 in 2003, the displays saw few buyers, but anticipate the later success of modern high-dpi displays such as Apple's retina display line.
==IBM T220 (9503-DG0) ==
The IBM T220 was introduced in June 2001 and was the first monitor to natively support a resolution of 3840×2400. In order to support such a high resolution, it features an unusual connector arrangement. On the rear of the display are two LFH-60 connectors. A pair of cables supplied with the monitor attaches to the connectors and splits into two single-link DVI connectors each, for a total of four DVI channels. One, two or four of the connectors may be used at once.
IBM T220 comes with a Matrox G200 MMS video card and two power supplies. To achieve native resolution the screen is sectioned into four columns of 960×2400 pixels. Under DOS mode, the monitor/card combination only supports 960×1200 screen mode running at 56 Hz. The monitor's native refresh rate is 41 Hz.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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