Q79 / 90 · JEE Main 2012 (Offline) · Physics
Truth table for system of four NAND gates as shown in figure is


- Correct answerA

- B

- C

- D

Hence, the correct answer is option: 'A'.
Q79 / 90 · JEE Main 2012 (Offline) · Physics





Hence, the correct answer is option: 'A'.