In this question, statement of Assertion is followed by a statement of Reason.
Assertion: The logic gate NOT can be built using diode.
Reason: The output voltage and the input voltage of the diode have 180 
phase difference. [2005]
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
The NOT gate has only one input and one output. It combines the input 
with the output 
, from Boolean expression
We cannot realize a NOT gate by using diodes.
Instead a transistor has to be used. An electric circuit and truth table for a NOT gate using a n − − p − − n transistor is shown.
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