NCERT Class XII Chapter
Semiconductor Electronics
Questions With Solutions
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Question : 15
Total: 19
You are given the two circuits as shown in figure. Show that circuit (a) acts as OR gate while the circuit (b) acts as AND gate.
Solution:
Let us first find the Boolean expression for logic circuit (a)
So, above logic circuit provides output as OR gate.
Here X =
(
)
Now let us find the Boolean expression for logic circuit (b)
By De-Morgan’s theorem we know ,(
)
So, above logic circuit provides output as AND gate.
So, above logic circuit provides output as OR gate.
Here X =
Now let us find the Boolean expression for logic circuit (b)
By De-Morgan’s theorem we know ,
So, above logic circuit provides output as AND gate.
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