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VGA (Video Graphics Array) is a video display standard, an interface, and a connector for connecting computers to monitors, projectors, or TVs. Introduced by IBM in 1987, it was a major advancement that allowed for resolutions like 640x480 pixels and introduced a standard 15-pin connector that has become colloquially known as the "VGA connector". While newer digital standards like HDMI and DisplayPort have largely replaced it, VGA remains a legacy standard still found on some older hardware due to its compatibility.

Key aspects of VGA

Standard: It was a graphics chipset standard that defined video signals and display modes.

Resolution: The original standard supported a resolution of 640x480 pixels with 16 colors, or 320x200 with 256 colors.

Connector: It uses a 15-pin DE-15 connector, which is often blue and has a male end with pins that fit into a female port on a monitor or computer.

Signal type: VGA transmits video signals using an analog connection, which can make it susceptible to signal degradation and interference over long distances.

Legacy support: Due to its long history, many operating systems still have a basic "VGA mode" that acts as a fallback driver if a more specific graphics card driver isn't installed.

Extensions: The original VGA standard led to variations like Super VGA (SVGA), which offered higher resolutions like 800x600 pixels.