Demultiplexers for general-purpose logic

Example

F1 = A'BC'D + A'B'CD + ABCD

F2 = ABC'D' + ABC

F3 = (A' + B' + C' + D')

• An n:2n demux can implement any function of n variables
  • Apply the vbls to the selects
  • Tie enable to a logic 1
  • Sum the minterms (ORs)

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