An OR gate is operated by using positve logic. What role will the OR gate play if we use negative logic? Or, Show that, the truth table of an OR gate in negative logic is similar to that of an AND gate in positive logic.

Explanation

In positive logic, lower and higher states are denoted by 0 and 1 respectively. According to this, the truth table of OR gate is (a). On the other hand, in negative logic, lower and higher states become 1 and 0 respecitvely. For this, 0 and 1 interchange their positions in truth table (a). So nes truth table (b) will be same as the truth table of an AND gate in positive logic.