Question

The combinations A and B of the NAND gates are shown below. Combinations (A) and (B) are equivalent to

                                          

Solution

Correct option is

OR gate and AND gate respectively

It follows from the logic symbol (A) that 

               

for which the truth table is as follows ; 

         

  A       B                          

  

  0        0        1        1         1

        0

  1        0        0        1         0

        1

  0        1        1        0         0

        1

  1        1        0        0         0

        1

 

This truth table satisfies the Boolean expression X = A + B, which is the OR gate. Hence logic symbol (A) is equivalent to an OR gate. It following from the logic symbol (B) that  

         

Which is the Boolean expression for the AND gate.   

SIMILAR QUESTIONS

Q1

What is the name of the gates

                                 

Q2

The combination of the gates

                                

Q3

The combination of the gates

                                   

Q4

What is the output X of the gate circuit

                                

Q5

Which of the following gates corresponds to the truth table given below?

 

   A             B

 Y

   1              1

 0

   1              0

 1

   0              1

 1

   0              0

 1

 

 

Q6

The symbol shown below represents

                                  

Q7

Which of the following gates will have an output of 1?

                                              

Q8

The truth table given below is for

  

  A           B

  C

  0            0

  1

  1            0

  1

  0            1

  1

  1            1

  0

 

 

Q9

Which of the following gates corresponds to the truth table given below?

            

 A        B

 Y

 0         0

 1

 0         1

 0

 1         0

 0

 1         1

 1

 

 

Q10

The truth table below is for

  

  A        B

 Y

  0         0

  1

  0         1

  0

  1         0

  0

  1         1

  1