Hello friends, here we have to see that how this 4-bit binary adder circuit using IC7483 works. Now, IC7483 is the IC from TTL family and we have to see that what happens and what is the output result here when we apply different binary inputs. Now, first we shall understand the setup. These are the two power supply terminals, red positive, black negative and these are the binary inputs of A group and these are the binary inputs for B group. 4 inputs each are there in 1 group A 382 A 1 A 0 is 1 binary number B 3 B 2 B 1 B 0 is another binary number. So, if you add these two A 382 A 1 A 0 plus B 3 B 2 B 1 B 0 you get S 4 S 3 S 2 S 1 is 0 as the result. Now, here I apply the 5 volt DC supply to the circuit. Now, see you can clearly see that all these binary input terminals are right now floating. So, when they are floating TTL IC considers them as logic 1 level and so the binary inputs right now are 1111 and 1111. So, the output will be the addition of these two numbers will be 111110. Now, if you take another combination say you connect these two A 0 and B 0 inputs to ground using two wires I connected over here. Now, the result will be entirely different and you can see the inputs are now 1110 and 1110. So, the output will be 1110. So, in the same way you can apply different combinations and get the results here. The inputs here are 1110 and the other is 1101. So, the output will be this 1110 11. So, in that way you can use this circuit to get the addition result of any two binary numbers of 4 bit each.