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Question -

Write the truth table for a NAND gate connected as givenin Fig. 14.45.

                                          

Hence identify the exact logic operation carried out bythis circuit.



Answer -

A actsas the two inputs of the NAND gate and Y is the output, as shown inthe following figure.

                                           

Hence, the output can be written as:

The truth table for equation (i)can be drawn as:

A

Y

0

1

1

0

This circuit functions as a NOT gate. The symbol for thislogic circuit is shown as:

                                      


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