320 × 200 in 4 or 16 colors (CGA compatibility).The VGA supports all graphics modes supported by the MDA, CGA and EGA cards, as well as multiple new modes. Comparison of standard resolutions including VGA's 640 × 480 Simulated VGA 320 × 200 256 color image (corrected for aspect ratio). Capabilities Simulated VGA 640 × 480 16 color image. IBM later released the standalone IBM PS/2 Display Adapter, which utilized the VGA but could be added to machines that did not have it built in. The first commercial implementation of VGA was a built-in component of the IBM PS/2, in which it was accompanied by 256KB of video RAM, and a new DE-15 connector replacing the DE-9 used by previous graphics adapters. Unlike the graphics adapters that preceded it ( MDA, CGA, EGA and many third-party options) there was initially no discrete VGA card released by IBM. The term "array" rather than "adapter" in the name denoted that it was not a complete independent expansion device, but a single component that could be integrated into a system.
#360 vga connector Pc
This small part count allowed IBM to include VGA directly on the PS/2 motherboard, in contrast to prior IBM PC models – PC, PC/XT, and PC AT – which required a separate display adapter installed in a slot in order to connect a monitor. The color palette random access memory (RAM) and its corresponding digital-to-analog converter (DAC) were integrated into one chip (the RAMDAC) and the cathode-ray tube controller ( CRTC) was integrated into a main VGA chip, which eliminated several other chips in previous graphics adapters, so VGA only additionally required external video RAM and timing crystals. Hardware design VGA section on the motherboard in IBM PS/55 The VGA analog interface standard has been extended to support resolutions of up to 2048 × 1536 and even higher in special applications. Instead, VGA was adapted into many extended forms by third parties, collectively known as Super VGA, then gave way to custom graphics processing units which, in addition to their proprietary interfaces and capabilities, continue to implement common VGA graphics modes and interfaces to the present day. IBM intended to supersede VGA with the Extended Graphics Array (XGA) standard, but failed. 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. 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. 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.
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