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In: Computer Science

Show the Karnaugh map representation of the function F() =, and use it to find the...

Show the Karnaugh map representation of the function F() =, and use it to find the minimum-cost both Sum of Product (SOP) and Product of Sum (POS) forms for the function F.

Solutions

Expert Solution

In many digital circuits and practical problems we need to find expression with minimum variables. We can minimize Boolean expressions of 3, 4 variables very easily using K-map without using any Boolean algebra theorems. K-map can take two forms Sum of Product (SOP) and Product of Sum (POS) according to the need of problem. K-map is table like representation but it gives more information than TRUTH TABLE. We fill grid of K-map with 0’s and 1’s then solve it by making groups.

Steps to solve expression using K-map-

  1. Select K-map according to the number of variables.
  2. Identify minterms or maxterms as given in problem.
  3. For SOP put 1’s in blocks of K-map respective to the minterms (0’s elsewhere).
  4. For POS put 0’s in blocks of K-map respective to the maxterms(1’s elsewhere).
  5. Make rectangular groups containing total terms in power of two like 2,4,8 ..(except 1) and try to cover as many elements as you can in one group.
  6. From the groups made in step 5 find the product terms and sum them up for SOP form.

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