KCET · Physics · Semiconductors
Which logic gate is represented by the following combination of logic gates ?
- A NAND
- B AND
- C NOR
- D OR
Answer & Solution
Correct Answer
(B) AND
Step-by-step Solution
Detailed explanation
The given logic gate is represented as
Output of logic gate is written as
\(
y=\overline{\bar{A}+\bar{B}}=\overline{\bar{A}} \cdot \overline{\bar{B}}
\)
[According to Demorgan's law \(\overline{x+y}=\bar{x} \cdot \bar{y}\) ] \(=A \cdot B=\) Output of AND gate
Output of logic gate is written as
\(
y=\overline{\bar{A}+\bar{B}}=\overline{\bar{A}} \cdot \overline{\bar{B}}
\)
[According to Demorgan's law \(\overline{x+y}=\bar{x} \cdot \bar{y}\) ] \(=A \cdot B=\) Output of AND gate
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