RGB interface transfers image data using a separate parallel line for each bit of color information. Different numbers of lines are used depending on the color depth. For instance, a full 24-bit data bus includes 8-bits/color, which is 256 possible values for reach Red, Green, and Blue color data. That means over 16 million possible colors can be described.
RGB lines include the different color lines, HSYNC, VSYNC, DE, and DOTCLK.