XGA, the Extended Graphics Array, is an IBM display standard introduced in 1990. International Business Machines Corporation abbreviated IBM and nicknamed "Big Blue", is a multinational Computer Technology Year 1990 ( MCMXC) was a Common year starting on Monday (link displays the 1990 Gregorian calendar) Today, it is the most common appellation of the 1024 × 768 pixels display resolution, but the official definition is broader than that. In Digital imaging, a pixel ( pict ure el ement is the smallest piece of information in an image The display resolution of a Digital television or Computer display typically refers to the number of distinct pixels in each dimension that can be displayed It was not a new and improved replacement for Super VGA, but rather became one particular subset of the broad range of capabilities covered under the "Super VGA" umbrella. Super Video Graphics Array or Ultra Video Graphics Array, almost always abbreviated to Super VGA, Ultra VGA or just SVGA or UVGA is
The initial version of XGA expanded upon IBM's VGA, adding support for two resolutions:
- 800 × 600 pixels with high color (16 bits per pixel, i. The term Video Graphics Array ( VGA) refers specifically to the display hardware first introduced with the IBM PS/2 line of computers in 1987, but through its widespread Highcolor graphics (variously spelled Hicolor, Hicolour, and Highcolour, and known as Thousands of colors on a Macintosh) is a method e. 65,536 colors).
- 1024 × 768 pixels with a palette of 256 colors (8 bits per pixel)
Like its predecessor (the IBM 8514), XGA offered fixed function hardware acceleration to offload processing of 2D drawing tasks. In Computer graphics, a palette is either a given finite set of Colors for the management of Digital images (that is a color palette) or IBM 8514 is an IBM graphics Computer display standard supporting a Display resolution of 1024×768 Pixels with 256 colors at 43 XGA and 8514 could offload line-draw, bitmap-copy (bitblt), and color-fill operations from the host CPU. Bit blit ( bitblt, blitting etc is a Computer graphics operation in which several Bitmap patterns are combined into one using a "raster XGA's acceleration was faster than 8514's, and more comprehensive in that it supported more drawing primitives and XGA's 16 bits per pixel (65,536 color) display-mode.
XGA-2 added true color mode for 640×480, 1024×768 support for high color and higher refresh rates, and improved accelerator performance. See also True Colors (disambiguation. Truecolor is a method of representing and storing graphical image information (especially in computer The refresh rate (most commonly the "vertical refresh rate" "vertical scan rate" for CRTs is the number of times in a second that display hardware draws All XGA modes have a 4:3 aspect ratio rounded to 8 pixels. The aspect ratio of an Image is its width divided by its height The aspect ratio of an Image is its width divided by its height
XGA should not be confused with VESA's EVGA (Extended Video Graphics Array) which was released at a similar time. The Video Electronics Standards Association (VESA is an international body founded in the late 1980s by NEC Home Electronics and eight other video display adapter manufacturers
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Clone hardware
XGA hardware was not cloned as extensively as VGA hardware. Nevertheless, at least one graphics company made several XGA-compatible chips, the IIT AGX.
Comparison chart
| Name | x (width) |
y (height) |
Pixels (x1 Million) |
Aspect Ratio |
Percentage of difference in pixels | Widescreen Version |
Typical screen sizes |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VGA | SVGA | XGA | XGA+ | SXGA | SXGA+ | UXGA | QXGA | |||||||
| VGA | 640 | 480 | 0. The term Video Graphics Array ( VGA) refers specifically to the display hardware first introduced with the IBM PS/2 line of computers in 1987, but through its widespread 31 | 1. 33 | 0% | -36% | -61% | -69% | -77% | -79% | -84% | -90% | WVGA | |
| SVGA | 800 | 600 | 0. Wide VGA or WVGA is any Display resolution wider than VGA, eg Super Video Graphics Array or Ultra Video Graphics Array, almost always abbreviated to Super VGA, Ultra VGA or just SVGA or UVGA is 48 | 1. 33 | 56% | 0% | -39% | -52% | -63% | -67% | -75% | -85% | ||
| XGA | 1024 | 768 | 0. 79 | 1. 33 | 156% | 64% | 0% | -21% | -40% | -47% | -59% | -75% | WXGA | 15"/ 38cm |
| XGA+ | 1152 | 864 | 1. Comparison chart WQUXGA display - 3840 x 2400 pixels (commercially available since Nov 2007 XGA+ stands for eXtended Graphics Array Plus and is a Computer display standard. 00 | 1. 33 | 224% | 107% | 27% | 0% | -24% | -32% | -48% | -68% | WXGA+ | 17"/ 43cm |
| SXGA | 1280 | 1024 | 1. WSXGA and WXGA+ are non-standard terms referring to computer display resolutions SXGA is an acronym for Super eXtended Graphics Array referring to a standard monitor resolution of 1280×1024 Pixels This Display resolution 31 | 1. 25 | 327% | 173% | 67% | 32% | 0% | -11% | -32% | -58% | WSXGA | 17-19"/ 43-48cm |
| SXGA+ | 1400 | 1050 | 1. WSXGA and WXGA+ are non-standard terms referring to computer display resolutions SXGA+ stands for Super eXtended Graphics Array Plus and is a Computer display standard. 47 | 1. 33 | 379% | 206% | 87% | 48% | 12% | 0% | -23% | -53% | WSXGA+ | |
| UXGA | 1600 | 1200 | 1. WSXGA+ stands for W idescreen S uper e' X' tended G raphics A rray and is a Computer display standard. UXGA is an abbreviation for Ultra eXtended Graphics Array referring to a standard monitor resolution of 1600 × 1200 Pixels which is exactly 92 | 1. 33 | 525% | 300% | 144% | 93% | 46% | 31% | 0% | -39% | WUXGA | 20"/ 51cm |
| QXGA | 2048 | 1536 | 3. WUXGA stands for Widescreen Ultra eXtended Graphics Array and is a Display resolution of 1920×1200 Pixels (2304000 pixels with a 1610 screen The QXGA, or Quad eXtended Graphics Array, display standard is a resolution standard in display technology 15 | 1. 33 | 924% | 555% | 300% | 216% | 140% | 114% | 64% | 0% | WQXGA | 30"/ 76cm |
See also
References
This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. The QXGA, or Quad eXtended Graphics Array, display standard is a resolution standard in display technology Comparison chart WQUXGA display - 3840 x 2400 pixels (commercially available since Nov 2007 The Free On-line Dictionary of Computing ( FOLDOC) is an online searchable encyclopedic Dictionary of Computing subjects The GNU Free Documentation License ( GNU FDL or simply GFDL) is a Copyleft License for free documentation designed by the Free Software
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