[7] Petrick's method is very tedious for large charts, but it is easy to implement on a computer.
[7] The method was improved by Insley B. Pyne and Edward Joseph McCluskey in 1962.
[8][9] Following is the function we want to reduce:[10] The prime implicant chart from the Quine-McCluskey algorithm is as follows: Based on the ✓ marks in the table above, build a product of sums of the rows.
Then choose the result which contains the fewest total literals (boolean variables and their complements).
In general, application of Petrick's method is tedious for large charts, but it is easy to implement on a computer.