A logic circuit is constructed using two ideal p-n junction diodes, D₁ and D₂ , and a resistor R . The anodes of both diodes are connected together to a common node, which is further connected to a +5 V DC supply via the resistor R . The cathodes of D₁ and D₂ serve as the inputs A and B , respectively. The output Y is taken from the common anode node. The inputs A and B switch between 0 V (Logic 0) and 5 V (Logic 1).

Step-by-step solution

Let us analyze the given diode circuit to determine its equivalent logic gate. The anodes of the ideal diodes D₁ and D₂ are connected to +5 V through resistor R , and their cathodes are the inputs A and B . Case 1: If either input A or B (or both) is at 0 V (Logic 0), the corresponding diode becomes forward-biased. Since the diodes are ideal, they act as short circuits, pulling the voltage at the common anode node (output Y ) down to 0 V (Logic 0). Case 2: If both inputs A and B are at 5 V (Logic 1), both diodes ar