Dear Student ,
K map is essential part of the digital electronics. It simplifies boolean expression and help you to simplify it in exam in case you get stuck up even after using all boolean axioms and theorem. It can solve more than 5 variable expressions.
We can design any logic circuit by using it. Convert requirement in to truth table. Convert table in to K map. Convert K map in to boolean expression and then in to the logic circuit. K map solving need practice.
M.L.sharma