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How do you describe a boolean function using a K-Map in such a way that the boolean function depends on the previous value of this function?

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    \$\begingroup\$ use previous output as one of the variable. \$\endgroup\$
    – nidhin
    Commented Mar 2, 2015 at 18:06

1 Answer 1

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If the present output depends on previous output, then use the previous output as as one of the variable in truth table and K-map.

Take JK flipflop as an example:

-------------------
J  K  Qn    Qn+1
-------------------
0  0   0     0
0  0   1     1
0  1   0     0
0  1   1     0
1  0   0     1
1  0   1     1
1  1   0     1
1  1   1     0
------------------

enter image description here

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