General data = Binary input (for example, let the letter E be value 101) -> Detection system -> decoder -> huge buss to all the screens -> AND gates -> memory on screen -> Screen.
Screen selector = Let the detection system (mentioned previously) shift 1 to the right when it detects an input. And then just use those AND gates to decide which display needs to be written to by ANDing the output of the shifter and data on the huge buss. And because you have memory behind the whole selection system the data will be stored once you move to the next display.
(Inspiration: https://www.youtube.com/watch?v=6X_T1KaBrLo - http://forum.openredstone.org/showthread.php?tid=58)
Screen selector = Let the detection system (mentioned previously) shift 1 to the right when it detects an input. And then just use those AND gates to decide which display needs to be written to by ANDing the output of the shifter and data on the huge buss. And because you have memory behind the whole selection system the data will be stored once you move to the next display.
(Inspiration: https://www.youtube.com/watch?v=6X_T1KaBrLo - http://forum.openredstone.org/showthread.php?tid=58)
Why do i keep coming back? No idea.