Hello, I was trying to make a 4-bit binary Adder and I reffered to some sites here and there but I could'nt get my concepts clear. Could anyone please tell me (show me?) how a circuit of a 4-bit binary adder would be? Using standard Gates and ICs only. Also, how would it be different from a 3-bit adder? Please help me with both the circuits, I will be greatful. If my question was not clear, ask me to clear it. Thank you, Greetings. Yash Arya.