Hello guys, my first time here. I can't find a answer to this question anywhere and I'm stressing out. How can I sum 10bit numbers using 4bit adders?

And how can I sum 3 numbers with 12bit (each number) using 8bit adders.

I really need a fast answer! Thank you!

 

Cascade them

 

MOD MOTE: Sounds like homework -- or, more to the point, homework just before it's due.

You need to show some level of effort on your part to at least start toward a solution.