The Color Graphics Adapter (CGA), originally also called the Color/Graphics Adapter or IBM Color/Graphics Monitor Adapter, introduced in 1981, was IBMs first color graphics card for the IBM PC and established a de facto computer display standard.
Corría el año 1994 cuando el Cybermaxx de Victormaxx llegó al mercado con soporte para PC y dos lentes de 0.7 pulgadas con una resolución de 505x230 pixeles. Sólo un año después, el Cybermaxx 2 impresionaba a las masas asistentes a la Expo de Entretenimiento Electrónico (E3) con una resolución mayor y soporte para VCR y consolas, no sólo para PC.
The Enhanced Graphics Adapter (EGA) is an IBM PC graphics adapter and de facto computer display standard from 1984 that superseded the CGA standard introduced with the original IBM PC, and was itself superseded by the VGA standard in 1987.
In addition to the original EGA card manufactured by IBM, many compatible third-party cards were manufactured, and EGA graphics modes continued to be supported by VGA and later standards.
he Extended Graphics Array (XGA) is an IBM display standard introduced in 1990. Later it became the most common appellation of the 1024 × 768 pixels display resolution, but the official definition is broader than that.
The initial version of XGA expanded upon IBMs older VGA by adding support for four new screen modes, including one new resolution:
640 × 480 pixels in direct 16 bits-per-pixel (65,536 color) RGB hi-color and 8 bit/px (256 color) palette-indexed mode.
1024 × 768 pixels with a 16- or 256-color (4 or 8 bit/px) palette, using a low frequency interlaced refresh rate.
XGA-2 added a 24-bit DAC, but this was used only to extend the available master palette in 256-color mode, e.g. to allow true 256-greyscale output. Other improvements included the provision of the previously missing 800 × 600 resolution in up to 65,536 colors, faster screen refresh rates in all modes (including non-interlace, flicker-free output for 1024 × 768), and improved accelerator performance and versatility.
All standard XGA modes have a 4:3 aspect ratio with square pixels, although this does not hold for certain standard VGA and third-party extended modes (640 × 400, 1280 × 1024).implement.
The Hercules Graphics Card (HGC) is a computer graphics controller formerly made by Hercules Computer Technology, Inc. that combines IBMs text-only MDA display standard with a bitmapped graphics mode. This allows the HGC to offer both high-quality text and graphics from a single card.
The HGC was very popular, and became a widely supported de facto display standard on IBM PC compatibles. The HGC standard was used long after more technically capable systems had entered the market, especially on dual-monitor setups.
The Monochrome Display Adapter (MDA, also MDA card, Monochrome Display and Printer Adapter, MDPA) is IBMs standard video display card and computer display standard for the IBM PC introduced in 1981.
The MDA does not have any pixel-addressable graphics modes, only a single monochrome text mode which can display 80 columns by 25 lines of high resolution text characters or symbols useful for drawing forms.
En los primeros 3 meses de 1939, IBM vendió 700.000 tarjetas perforadas al bando sublevado de Francisco Franco.
En 1946, International Business Machine Corporation, de Nueva York, hace donación de 109.000 pesetas para su reparto entre las clases más necesitadas. 50.000 de esas pesetas iban a parar directamente a manos de Franco.
Tarjeta perforada IBM S.A.E. 8035 del año 1964 aproximadamente, de 80 columnas y 12 puntos de localización, con medidas 187,3 x 82,5 mm de papel rígido.
IBM punch card S.A.E. 8035 of 1964 approximately 80 columns and 12 locate points, measuring 187.3 x 82.5 mm of stiff paper.
Video Graphics Array (VGA) is a video display controller and accompanying de facto graphics standard, first introduced with the IBM PS/2 line of computers in 1987, which became ubiquitous in the IBM PC compatible industry within three years.
The term can now refer to the computer display standard, the 15-pin D-subminiature VGA connector, or the 640×480 resolution characteristic of the VGA hardware.
VGA was the last IBM graphics standard to which the majority of IBM PC compatible computer manufacturers conformed, making it the lowest common denominator that virtually all post-1990 PC graphics hardware can be expected to implement.