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The VGA connector was Introduced with IBM x86 machines, but became a universal analog display interface. Display Data Channel was later added to allow monitors to identify themselves to graphic cards, and graphic cards to modify monitor settings. Successor analog protocols include SVGA, XGA, etc. DVI is a more modern digital alternative.
Such cards, when equipped with only a VGA connector adapter cable, cannot be connected to a monitor with only a DVI-D input. A DMS-59 to DVI adapter cable needs to be used with such monitors. The DMS-59 connector is derived from the LFH-60 Molex low-force helix connector, which could be found in some earlier graphics cards.
The result was equivalent to VGA or even PGC—but with a wide palette—at a point simultaneous with the IBM launch of VGA. Later, larger monitors (15" and 16") allowed use of an SVGA-like binary-half-megapixel 832×624 resolution (at 75 Hz) that was eventually used as the default setting for the original, late-1990s iMac.
Display Data Channel (DDC) is a collection of protocols for digital communication between a computer display and a graphics adapter that enable the display to communicate its supported display modes to the adapter and that enable the computer host to adjust monitor parameters, such as brightness and contrast.
The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, [1] as well as many monitors, projectors and HD television sets.
A VGA monitor, for example, can be connected to a video source with DVI-I through the use of a passive adapter. Since the analog pins are directly compatible with VGA signaling, passive adapters are simple and cheap to produce, providing a cost-effective solution to support VGA on DVI.
The HDMI Alternate Mode for USB-C allows HDMI-enabled sources with a USB-C connector to directly connect to standard HDMI display devices, without requiring an adapter. [195] The standard was released in September 2016, and supports all HDMI 1.4b features such as video resolutions up to Ultra HD 30 Hz and CEC. [ 196 ]
Back of a CGA Video Adapter board, with the RCA composite output connector visible on the right. The Color Graphics Adapter uses a standard RCA connector for connection to an NTSC-compatible television or composite video monitor. [3] The connector on the card is female and the one on the monitor cable is male.
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