Good job. Nothing like the sense of accomplishment in figuring out the solution on your own.

If you only have six inputs, you can also use three FA and one HA and since a HA is just an XOR and an AND gate, you can use three FA, one XOR and one AND.

Question: How could it be as a circuit using 3 FA and 1 HA? Can you provide an image?
Thanks!
Mod: link to old thread
https://forum.allaboutcircuits.com/threads/counting-1-bits-using-full-adders.116251/post-908247

 

Question: How could it be as a circuit using 3 FA and 1 HA? Can you provide an image?
Thanks!

I take it you have the same homework problem?

 

Somehow. Can you send me if you are able pm?

 

Somehow. Can you send me if you are able pm?

I don't know what you mean by "somehow".

Why do you want a PM? That largely defeats the purpose of the forum, which is to provide useful information not only to the participants of the discussion, but to anyone else that ever comes across it.