Minimum number of NAND gates required to implement the following binary…

2020

Answer: A. 4 — To implement the expression (A'+B')(C+D) using NAND gates: = (A'+B')(C+D) = (A'+B')C + (A'+B')D = (AB)'C + (AB)'D = [{(AB)'C}'.{(AB)'D}']'

1. A.

   4

2. B.

   5

3. C.

   3

4. D.

   6

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Correct answer: A

To implement the expression (A'+B')(C+D) using NAND gates:

= (A'+B')(C+D)
= (A'+B')C + (A'+B')D
= (AB)'C + (AB)'D 
= [{(AB)'C}'.{(AB)'D}']' 

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