Match List I with List II \(\begin{array}{|c|l|c|l|l|} \hline \text{List I} &…
2021
Match List I with List II
\(\begin{array}{|c|l|c|l|l|} \hline \text{List I} & \text{List II} \\ \hline \text{A. Odd Function} & \text{I. NAND gate} \\ \hline \text{B. Universal Gate} & \text{II. XOR gate} \\ \hline \text{C. 2421 code} & \text{III. Amplification} \\ \hline \text{D. Buffer} & \text{IV. Self‐Complementing} \\ \hline \end{array}\)
Choose the correct answer from the options given below:
- A.
A ‐ I, B ‐ II, C ‐ III, D ‐ IV
- B.
A ‐ II, B ‐ I, C ‐ IV, D ‐ III
- C.
A ‐ I, B ‐ III, C ‐ II, D ‐ IV
- D.
A ‐ IV, B ‐ II, C ‐ III, D ‐ I
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Show answer & explanation
Correct answer: B
Correct matching: Odd Function → XOR; Universal Gate → NAND; 2421 code → Self‑complementing; Buffer → Amplification.
Odd Function: Implemented by the XOR gate because XOR outputs 1 when an odd number of inputs are 1.
Universal Gate: NAND is a universal gate since any Boolean function can be constructed using only NAND gates.
2421 code: A weighted BCD code that is self‑complementing — the 9's complement of a digit corresponds to the bitwise complement of its 2421 code.
Buffer: Provides unity voltage gain but increases current‑driving capability (so it is associated with amplification or driving strength rather than code properties).
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