7. Which of the following correctly describes output Yi (i: 0 to 7) of the 3-line to 8-line decoder, where mi is the ith minterm of the CBA select lines and E is the enable input?

  1. Yi = mi*E
  2. Yi = (mi*E)'
  3. Yi = (mi*E')'
  4. Yi = (mi'*E)'
  5. Yi = (mi'*E')'




1 is WRONG. The ith decoder output is asserted low (i.e.outputs have bubbles).

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