NIELIT 2017 July Scientist B (IT) - Section B: 49

Question

Which one of the following is true?

• A. NAND gate and AND gate both are universal gates
• B. NOR gate and OR gate both are universal gates
• C. NAND gate and OR gate both are universal gates
• D. NAND gate and NOR gate both are universal gates

Answer 1

NAND and NOR are both universal gates (also functionally complete) as we can implement all logic circuits using them. For OR or AND we need NOT gates then it will be functionally complete.

So D is correct.

Comments

Hey bro,can you plz explain the meaning of “functionally complete” ?