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The five common logic gates are NOT, AND, OR, NAND and:
AXNOR gate
BBuffer
CNOR gate
DXOR gate
Answer & Solution
Correct answer: C. NOR gate
1. Four of the five are NOT, AND, OR and NAND.
2. The fifth is OR followed by NOT.
3. That is the NOR gate.
_Source: NCERT Class 12 Physics Part II, Chapter 14, Semiconductor Electronics._
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