NCERT Class XII Chapter
Semiconductor Electronics
Questions With Solutions
© examsnet.com
Question : 17
Total: 19
You are given two circuits as shown in figure which consist of NAND gates. Identify the logic operation carried out by the two circuits.
Solution:
(a) Let us find Boolean expression for given logic circuit
so, output Y ={
}
hence logic circuit operates as AND gate.
(b) By De-Morgan’s theorem
(
+
)
so, the given logic circuit acts as OR gate.
so, output Y =
hence logic circuit operates as AND gate.
(b) By De-Morgan’s theorem
so, the given logic circuit acts as OR gate.
© examsnet.com
Go to Question: