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DVI-Digital Visual Interface

Digital Visual Interface is a high quality digital video connectivity standard developed by DDWG - Digital Display Working Group. This connection standard offers two different connectors: DVI-D, with 24 pins for digital video signals only, and DVI-I with 29 pins for both digital and analog video signals. A third connector style, DVI-A, is occasionally used for analog-only connections with DVI-I cables. To support different resolution requirements, the DVI specification provides for one or two video links per connector, commonly known as single link or dual link, respectively.

DVI-D Single Link - Provides for a maximum pixel rate of 165 MHz, corresponding to 4.95 Gbps, sufficient for resolutions of WUXGA 1920x1200 and HDTV 1080p/60.

DVI-D Dual Link - Provides for a maximum pixel rate of 330 MHz, corresponding to 7.92 Gbps, allowing for greater color depths and high resolutions up to 2560x1600.

HDMI- High Definition Multimedia Interface

HDMI is a digital AV interface that supports high resolution computer-video and HDTV as well as multiple channels of audio on a single cable. It is backward compatible with DVI. The most common connector is the 19-pin Type A. Other connector variations include Type B for dual link applications, and Type C and Type D for small, portable equipment such as consumer camcorders and smart phones.
Signal Type: digital

DisplayPort Connector - DP

DisplayPort is a digital display interface developed by VESA. It is used primarily between a computer and its display, or between a computer and an AV presentation system. DisplayPort revision 1.1a supports data rates up to 8.64 Gbps data rate over a 2 meter cable.

Signal Type: digital

VESA - E-DDC

This is identical to the standard VGA port and delivers RGB computer-video through the same pin assignments, but also incorporates the appropriate data channels for EDID communications between a display and the source.
Signal Type: analog

XGA/XGA-2

IBM developed XGA/XGA-2 (Extended Graphics Array) to provide a means to offer higher frequencies and resolutions in the "VGA" domain. These standards utilize software and ID bit termination to achieve these changes.

*Many graphic card manufacturers offer super high resolution modes that are not necessarily a standard (like XGA or VESA). Thus, a customer running one of these non-standard modes can be displaying a graphics resolution up to 1600 x 1200 at 117 kHz (horizontal).
Signal Type: analog

VGA

In 1987 IBM developed VGA as one of the first computer video types to use analog signals. The ability to display sharper images with high color depth is something that, even today, is being constantly expanded upon.
Signal Type: analog

13W3-SGI-Silicon Graphics

Silicon Graphics manufacturers high end computers that are used in graphic rendering and CAD/CAM applications. This computer generally operates at two different frequencies (48 kHz and 64 kHz), which is determined upon boot up. This computer type outputs sync RsGsBs, RGsB, RGBS and RGBHV.
Signal Type: analog

13W3-Sun Color

Sun manufactures high end computers that are capable of very high resolutions. They are able to output these various resolutions from the same card, this is determined at boot up by the manner in which sense lines (ID Bits) are terminated within the local monitor.
Signal Type: analog

13W3-IBM PowerPC

Some versions of the IBM PowerPC computer come equipped with a 13W3 video connector. This connector is utilized to maintain the signal integrity at the high frequencies at which this computer is capable of operating. Maximum resolution: 1600 x 1200.
Signal Type: analog

Mac II/Quadra/PowerMac

640 x 480 to 1152 x 870
35-68 kHz, 66.7-70 Hz

Use of analog video signals allows for unlimited colors to be produced. Macintosh graphic cards are unique in a couple of different regards. First, the variety of sync formats. In the past, sync has been available three different ways, and in some cases all from one card. Those formats are RGsB, RGBS, and RGBHV. Macintosh graphic cards also offer multiple line rates and resolutions. These rates and resolutions are determined at boot up by the manner in which the sense lines (ID Bits) are terminated within the local monitor.
Signal Type: analog

DFP - Digital Flat Panel

The DFP connector is a 20 pin connector. It and the DVI connector carry the same type of digital signal (TMDS. Transition Minimized Differential Signaling). The DFP connector was created before the DVI, by VESA, and is only designed to carry digital video, so there is no provision to carry analog.
Signal Type: digital

CGA/EGA

CGA - 320 x 200, 15.7 kHz, 60 Hz
EGA - 640 x 350, 15.7/21.8 kHz, 60 Hz

CGA/EGA uses a digital signal, referred to as TTL (Transistor-Transistor Logic), for the transmission of its video signal. TTL is a signal that operates in an on or off state only, thus limiting the amount of displayable colors. Intensity bits are used to expand available colors up to four times the original amount. Commonly used in low resolution computers.
Signal Type: TTL

ECL

Sun & Apollo Mono (Black & White Workstations)

ECL (Emitter Coupled Logic) uses a high speed digital signal. It is commonly found in high to extremely high resolution computers where the displays are generally monochrome.
Signal type: ECL