Summary of various explicit modes (VGA, XGA ...)

VGA

VGA(Video graphics Array) Is a computer display standard proposed by IBM in 1987 using analog signals, which is outdated in today's PC market. Even so, VGA is a low standard supported by the most manufacturers, and personal computers must support VGA before loading their own unique drivers. For example, the boot screen of Microsoft Windows products still uses the VGA display mode, which also shows that the resolution and the number of colors are insufficient.

VGA is often used directly to reference a resolution of 640x480 regardless of its graphical device. The VGA device can store four full color versions at the same time, and can be quickly converted between them, it looks like a real-time color on the screen.

Svga

Svga isAdvanced video graphics Array(Super video graphics array or super VGA or svga), the standard released by Vesa for IBM compatible hosts. Resolution: 800x600 (4 bits per pixel, optional in 16 colors ).

Svga, a replacement for VGA screens, supports a maximum resolution of 800x600 and a screen size of 12.1 inch. because of its low pixels, few laptops use this screen.

The naked eye is much more sensitive to color than the resolution, so even if the resolution is low, the image is still vivid. Due to the rapid popularity of good performance, VGA has been expanded on the basis of VGA, such as increasing the memory to 1 m and enabling it to support higher resolutions such as 800x600 or 1024x768, these extended models are called the Super VGA mode of VESA (Video Electronics Standards Association, Video Electronics Standards Association), svga for short. Currently, video cards and monitors support the svga mode. Both VGA and svga use a 15-pin trapezoid plug to transmit analog signals.

Svga, XGA, and sxga are the main resolution (or resolution) standards. It is a term used on computers and projectors to describe common resolutions.

XGA

XGA (Extended graphics array)Is a computer display mode. Display Mode refers to the performance of the Computer Display, especially the maximum number of colors and the maximum image resolution. In the current PC system, you can find multiple display modes, such as VGA, svga, XGA, sxga, and uxga.

The expanded graphic array (XGA) display system was invented by IBM in 8514 following the 1990/A display mode, the XGA newer version of XGA-2 provides 800x600 pixel resolution in real color or 65536x1024 pixel resolution in 768 colors, these two types of image resolution levels may be the most commonly used by individuals and small businesses today.

Extended graphics array is a type of LCD screen widely used in laptops. Nearly 80% of notebooks on the market use this product. It supports a maximum resolution of 1024x768. The screen size ranges from 10.4 inch, 12.1 inch, 13.3 inch to 14.1 inch, and 15.1 inch.

The real resolution of the projector is 1024x768. Now, the XGA projector is a mainstream product in the projection market. With the continuous technological advances and product prices decline, XGA began to enter the popularization stage. It has become the XGA (1024x768 resolution) Resolution for many display products with "specified specifications.

Sxga

Advanced extended graphic array (Super extended graphics array or super XGA or sxga ). An existing fact display standard with a resolution of 1280x1024. Each pixel is represented in 32 bits (true color ). The aspect ratio of this widely used display standard is rather.

Uxga

Uxga (also known as uvga): Ultra extended graphics array. The Chinese name is "Ultra extended graphics array". This screen is applied to the 15 inch screen book and supports a maximum resolution of 1600x1200. This number shows a total of 1.92 million pixels on the display screen, because the manufacturing process is demanding, so the price is also relatively expensive. At present, only a few high-end mobile workstations are equipped with this type of screen. Uxga is the preferred solution for computer users who want to get good details. An example of such an application is the reception of a network TV program, which runs both a text processor and a vector graphics program at the same time. When using computer-aided graphics (CAD) programs, scientists and engineers can leverage high solutions and large Display sizes, especially in 3D performance. LCD displays with uxga specifications provide details comparable to printed paper. The main disadvantage of this type of display is the high cost. At present, the uxga resolution is usually used for 20 inch of LCD displays.

Special words and resolution table

The last sentence of the above explanation has led to a misunderstanding that sxga is a special specification different from an ordinary display. Later I found that sxga means the resolution is 1280x1024. In addition, the resolution list corresponding to other special words is attached.

　　

Special words	Resolution	Total pixels
Qqvga(Quarter-VGA)	160 × 120	19,200
Qvga(Quarter-VGA)	320 × 240	76,800
Wqvga(Wide quarter-VGA)	400 × 240	96,000
Hvga(Half VGA)	640 × 240 320 × 480	153,600
VGA	640 × 480	307,200
Svga(Super-VGA)	800 × 600	480,000
XGA	1024 × 768	786,432
Wxga(Wide XGA)	1280 × 768 1280 × 800 1366 × 768	983,040 1,024,000 1,049,088
Wsxga(Wide super-XGA)	1280 × 854	1,093,120
Quad-VGA	1280 × 960	1,228,800
Wxga +(Wide XGA +)	1440 × 900	1,296,000
Sxga(Super-XGA)	1280 × 1024	1,310,720
Wxga ++(Wide XGA ++)	1600 × 900	1,440,000
Sxga +	1400 × 1050	1,470,000
Wsxga +(Wide super-XGA +)	1680 × 1050	1,764,000
Uxga(Ultra-XGA)	1600 × 1200	1,920,000
Wuxga(Wide ultra-XGA)	1920 × 1200	2,304,000
Qxga(Quad-XGA)	2048 × 1536	3,145,728
Wqxga(Wide quad-XGA)	2560 × 1600	4,096,000
Qsxga(Quad-super-XGA)	2560 × 2048	5,242,880
Quxga(Quad-ultra-XGA)	3200 × 2400	7,680,000
4k2k	4096 × 2048	8,388,608
Quxga wide	3840 × 2400	9,216,000

Source: Baidu encyclopedia

Organize: Alvin