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  • You are given the two circuits as shown in Fig. 14.36. Show that circuit (b) acts as AND gate

 Q. 14.11     You are given the two circuits as shown in Fig. 14.36. Show that circuit 

                    (b) acts as an AND gate.

                    

Answers (1)

best_answer

The output of the NOT gate ( left part of the circuit) is the input of the NOR gate 

Hence the output of total circuit Y = \over(\overline A + \overline B) 

                                                 =  \overline{\overline A}.\overline{\overline B}                                  \overline{A+B}=\overline A. \overline B

                                                  = A*B

Hence the circuit functions as an AND gate.

or give the inputs 00,01,10,11 and observe the truth table

 

INPUTS

 

 OUTPUT
A        B Y
0         0 0
0         1 0
1         0 0
1         1 1

The truth table is the same as that of AND gate

Posted by

Pankaj Sanodiya

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