4 bit nibble adder question

omarnossa9

New member
I am trying to make a 4 bit nibble adder i.e. the range is 0-30. Add 1111 + 1111.

Using the components attached to the photo.

1728867982492.png

My main doubt or problem is what conversion I should do to display the numbers correctly on the display, since for a single display it can show me from 0 to 9, normally, making normal connections... but I need to display the number on both displays. correctly, 1 in one, and 0 in another.

I had thought of separating by units and tens, but from the integrated 74HC, divide this. In advance, thank you.
 
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