Multiple choice

A positive AND gate is also a negative

  1. NAND gate

  2. NOR gate

  3. AND gate

  4. OR gate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In positive logic, high voltage (1) represents TRUE and low voltage (0) represents FALSE. In negative logic, this is inverted: high voltage (1) represents FALSE and low voltage (0) represents TRUE. An AND gate in positive logic (Y = A AND B) becomes an OR gate in negative logic because the voltage levels that indicate TRUE are swapped. By De Morgan's laws, NOT(NOT(A) AND NOT(B)) = A OR B, confirming this equivalence.

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