Learn in the textbookSignal Methods and Video Interfaces
DefinitionAnalog RGB (アナログRGB) is a video interface for connecting displays that sends the red, green and blue signals in analog form as they are.
ExplanationRGB stands for red, green and blue, the three primary colors of light, and the mix of their strengths forms the colors on screen. The typical connector is the trapezoid-shaped 15-pin D-sub, also called a VGA connector. Because the signal is analog, the picture tends to blur when the cable is long or the resolution is high.
AnalogyIt is like mixing a color by smoothly turning the dimmer knobs on a red, a green and a blue lamp.
Memory hookLook at a screen through a magnifying glass and you see tiny red, green and blue dots of light, one for each letter of RGB.