A) OR gate
B) XOR gate
C) AND gate
D) NAND gate
Correct Answer: B
Solution :
Output of upper AND gate \[=\overline{A}B\] Output of lower AND gate \[=A\overline{B}\] Thus, output of OR gate \[=\overline{A}B+A\overline{B}\] This is Boolean expression for XOR gate. Note: XOR operation employed in XOR gate is called mod-2 addition and rules of addition are \[0\oplus 0=0;\] \[0\oplus 1=1;\] \[1\oplus 0=1;\] \[1\oplus 1=0\]
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