This is my 2 digit redstone display system.
You enter the number you want the screen to display in binary with the levers next to the display. the machine then decodes the binary to decimal and powers the line of coding that creates the chosen number on the screen.

It may not be much but i made it myself and it is my first step into the wide world of complex redstone programing.

drop a diamond if you like it and expect more cool redstone creations to come from me.

Additional Notes

P.S. check out my redstone partner in crime LordGrape (he is also a good builder