Recomendations:
Use 20 or + chunks of visual distance
Use optifine
Tested in MC.1.12.2 U can use in MC.1.13.2 but you can not run it again in MC.1.12.2.

This is a redstone screen that can show 8 colors and has several types of entries, one of these requires a controller that is not yet available, something like a small calculator.
Description of tickets:

Basic entries:

*Quartz blocks: X and Y decoder. Decoder position, Fill / Dots mode and X / Y selector.
*Black wool: Update and reset of memory Y. Update of X
*Red / Green / Blue Wool: selection and combination of colors
*Tile Red / Green / Blue / Black: reset colors
*Lapizlasuli block: repair of failed pistons

The following inputs require a controller

*Red / Green / Blue Terracotta: Red, Green and Blue Update
*Black Terracotta: Color mode as line Y
*Bone block: Y line color direction
*Quartz Column: Resetting the line direction Y

NOTE:

If you extract the screen to a .SCHEMATIC file to load it in another world, it is necessary that you first calibrate the map in the destination world so that the colors and pixels are displayed well.
* Map level: 3 (three)
* 4x4 (16) blocks represent 1 pixel
* Red exchanges a block with Black