Full Adder

Before diving into advanced electronics, I wanted to revisit the foundations of digital logic. This time, I decided to build a full adder circuit.

What is a Full Adder?
A full adder is a digital circuit that adds three binary inputs and gives two outputs:

• Sum
• Carry

Truth table

A	B	C_in	Sum	C_out
0	0	0	0	0
0	0	1	1	0
0	1	0	1	0
0	1	1	0	1
1	0	0	1	0
1	0	1	0	1
1	1	0	0	1
1	1	1	1	1

I then implemented my truth table using logic gates and simulated on logisim software

After this I made a circuit using the 2-input logic gates 7408, 7432 and 7486.

$7408704$

$74$

And then I finally put this on the breadboard.

(P.S. : I did not have SPST kind of switches so I used push button to give input)