In the given digital logic circuit, two inputs, A and B , are passed through two separate NAND gates where both inputs of each respective gate are shorted together. The outputs from these two NAND gates are then fed as the two inputs into a third NAND gate to produce the final output Y . Which of the following basic logic gates does this entire circuit arrangement represent?

Step-by-step solution

The first NAND gate has both its inputs connected to A . Its output acts as a NOT gate, giving A A = A . The second NAND gate has both its inputs connected to B . Its output acts as a NOT gate, giving B B = B . These two outputs are fed into a third NAND gate. The final output Y is given by: Y = A B Using De Morgan's theorem, X Y = X + Y : Y = A + B Y = A + B This is the Boolean expression for an OR gate. Answer: OR gate