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Digital ElectronicsDecoder Applications

To implement an arbitrary Boolean function of n input variables directly with a decoder and an OR gate, the decoder normally requires how many output minterm lines?

  • An
  • B2n
  • C2^n
  • Dn^2
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Correct Answer: C. 2^n
Explanation: An n-to-2^n decoder generates one output for each possible input minterm. The required minterm outputs can then be ORed to realize an SOP function.
Reference: Standard digital electronics: decoder realization of Boolean functions
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