![]() ![]() The aspect ratio maintained by the VGA standard is 4:3, but that of modern displays is 16:9.There are huge chances of signal loss and reduced resolution since the transmitted signal is analog.Separate interfacing should be given for audio signals. The biggest disadvantage of VGA is that it does not support digital data, while most modern devices have digital signaling.(More specifically, they are analog 0.7 volt positive signals with a 75-ohm load at each end of. The disadvantages of VGA cables are listed below: On a VGA connector, pins 1, 2, and 3 are only 0.7 volts maximum. Read also: 5 HDMI Types & 7 Standards Explained(Speed Compared) Disadvantages Two alternating clock pins are provided for communicating with the connected devices.A separate ground shield is given for red, green, and blue data pins.The cables come with double and sometimes, triple shielding.The connectors are manufactured with high-quality materials.The VGA connectors are cheap and easily available.Some of the advantages of VGA cables are listed below: 7 Best USB C to VGA Adapters of 2023(Buying Guide).The entire middle row is allocated for the respective ground connections except for pin 9. The RGB component pins are placed in the top row, and HSync and VSync are in the bottom row. Originating with the 1987 IBM PS/2 and its VGA graphics system, the 15-pin connector went on to become ubiquitous on PCs, as well as many monitors, projectors and high-definition television sets. The VESA DDC pins are used in modern VGA connectors to identify the connected display device. The Video Graphics Array (VGA) connector is a standard connector used for computer video output. Hence, the analog video signal is transmitted as RGBHV components VESA DDC (Video Electronics Standards Association Display Data Channel ) data. The other two components of video data are horizontal sync and vertical sync. Separate pins are allocated for Red, Green, and Blue components. Read also: RS232 Pinout, Definition, Uses, Speed & Baud Rate Pin number Pin name Pin description 1 Red Red video 2 Green Green video 3 Blue Blue video 4 ID2/RES(N/C) Monitor ID Bit 2 / Reserved 5 GND Ground 6 RGND Red Ground 7 GGND Green Ground 8 BGND Blue Ground 9 KEY(N/C) +5V DC output from graphic card 10 SGND Sync Ground 11 ID0/RES(N/C) Monitor ID Bit 0 / Reserved 12 ID1/SDA(N/C) Monitor ID Bit 1 / I2C bi-directional data line 13 HSYNC Horizontal Sync 14 VSYNC Vertical Sync 15 ID3/SCL(N/C) Monitor ID Bit 3 / I2C data clock VGA pinout The pin description of the VGA connector is listed in the table below. Apart from the regular insertion, the connector has a screw-type locking mechanism. The pins are arranged in 3 rows, each raw consisting of 5 pins.
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