digital logic dual negation of circuits

Question

A positive level logic digital circuit is shown below.

The negative level logic digital circuit for the given circuit is:

Comments

  .d is the option...0-true 1-false

1st circuit...gives 0 at 1,1(old)   ,,...must give 1 at 0,0(new)..2nd circuit(xor)(different ,1 at same ,0) remove compliment from older

Answer 1

Detailed Video Solution: https://www.youtube.com/watch?v=IvywHr5Oc00&t=6484s 

Positive logic is when a high voltage level represents a logic 1 and a low voltage level represents a logic 0. Negative logic is the reverse, where a low voltage level represents a logic 1 and a high voltage level represents a logic 0.

The positive logic & negative level logic are dual of each other. Detailed Explanation with Proof (Click HERE)

Answer will be D. Watch the Detailed Video Solution HERE.