# Digital Logic - Combinational Circuits

31:

What is the minimum number of 2 input NAND gates required to implement the function
F = (x'+y') (z+w)

 A. 6 B. 5 C. 4 D. 3 Answer Report Discuss Option: C Explanation : Click on Discuss to view users comments. barani said: (7:10am on Friday 1st June 2018) As it is 2 input NAND gates 3 gates are sufficient to design Write your comments here:
32:   How many truth tables can be made from one function table ?
 A. One B. Two C. Three D. Any numbers Answer Report Discuss Option: B Explanation : Click on Discuss to view users comments. Write your comments here:
33:   A comparison between serial and parallel adder reveals that serial order
 A. is slower B. is faster C. operates at the same speed as parallel adder D. is more complicated Answer Report Discuss Option: A Explanation : Click on Discuss to view users comments. Write your comments here:
34:   What is the largest number of data inputs which a data selector with two control inputs can have ?
 A. 2 B. 4 C. 8 D. 16 Answer Report Discuss Option: B Explanation : Click on Discuss to view users comments. Write your comments here:
35:   If a logic gates has four inputs, then total number of possible input combinations is
 A. 4 B. 8 C. 16 D. 32 Answer Report Discuss Option: C Explanation : Click on Discuss to view users comments. adnan ahmed said: (2:18pm on Thursday 18th April 2013) how? Write your comments here: