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Online minimization of boolean functions


Input equation = ~((a+~(~bc~d))(~ab+~cd))

Truth table
abcdOutput
0 0 0 0 1
0 0 0 1 0
0 0 1 0 1
0 0 1 1 1
0 1 0 0 0
0 1 0 1 0
0 1 1 0 0
0 1 1 1 0
1 0 0 0 1
1 0 0 1 0
1 0 1 0 1
1 0 1 1 1
1 1 0 0 1
1 1 0 1 0
1 1 1 0 1
1 1 1 1 1

DNF (with ~) = ~a~b~c~d + ~a~bc~d + ~a~bcd + a~b~c~d + a~bc~d + a~bcd + ab~c~d + abc~d + abcd

DNF (with overline) = abcd + abcd + abcd + abcd + abcd + abcd + abcd + abcd + abcd

CNF (with ~) = (a + b + c + ~d) (a + ~b + c + d) (a + ~b + c + ~d) (a + ~b + ~c + d) (a + ~b + ~c + ~d) (~a + b + c + ~d) (~a + ~b + c + ~d)

CNF (with overline) = (a + b + c + d) (a + b + c + d) (a + b + c + d) (a + b + c + d) (a + b + c + d) (a + b + c + d) (a + b + c + d)

Minimal Form (with ~) = ~b~d + ~bc + a~d + ac

Minimal Form (with overline) = bd + bc + ad + ac




Karnaugh map

cd cd cd cd
ab 1 0 1 1
ab 0 0 0 0
ab 1 0 1 1
ab 1 0 1 1