Boolean Algebra


Q4- Draw the output waveform of the NAND gate when we have the two inputs as follow and delay of the gate is equal to 12.5 ns when output goes from LOW to HIGH and delay is 17.5 ns when output goes from HIGH to LOW.

Ans: To get the exact output waveform we firstly draw the output waveform without considering any delay and hence we get the output waveform as:

Now to get the actual output we’ll delay the output HIGH to LOW edge by 17.5 ns and LOW to HIGH edge by 12.5 ns.


We can directly check the output of the gate and delay the output accordingly if out is HIGH to LOW or LOW to HIGH and hence no need to draw a waveform without considering the delay.

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