You are given two circuits as shown in f...

You are given two circuits as shown in fig. which consist of NAND gates . Identify the logic operation carried out by the two circuits .

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The logical operation carried out by the above circuit is

Write the truth table for the circuits gives in figure consisting of NOR gates only . Identify the logic operations (OR , AND , NOT) performed by the two circuits .

Write the truth table for circuit given in figure below consisting of NOR gates and identify the logic operation (OR , AND , NOT) which this circuit is performing . (Hint : A = 0 , B = 1 , then A and B inputs of second NOR gate will be 0 and hence Y = 1 . Similarly work out the values of Y for other combination of A and B . Compare with the truth table of OR , AND , NOT gates and first the correct one .)

Write the truth table for a NAND gate connected as given in figure below . Hence identify the exact logic operation carried out by this circuit .

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NEW JOYTHI PUBLICATION-SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS -SOLUTION TO EXERCISES FROM NCERT TEXT

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