Minimize 0’s, then Complement to get POS

AB

01

0

0

0

0

00

CD

00

1

0

1

1

01

11

10

X

0

X

0

X

X

X

X

11

10

F’(A,B,C,D) = C’ + BD

Take inverse of both sidesF(A,B,C,D) = (C’ + BD)’ = C (BD)’ = C (B’+D’)

Minimizing zeros, then applying inverse to both sides is a way to get to minimum POS form!!!!!

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