Semiconductor Electronics Materials Devices and Simple Circuits - Result Question 107

109. The following circuit represents

[1999]

(a) OR gate

(b) XOR gate

(c) AND gate

(d) NAND gate

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Answer:

Correct Answer: 109. (b)

Solution:

  1. (b) Output of upper AND gate $=A \cdot \bar{{}B}$

Output of lower AND gate $=\bar{{}A} \cdot B$

$\therefore$ Output of OR gate, $Y=A \cdot \bar{{}B}+B \cdot \bar{{}A}$

This is Boolean expression for XOR gate.