
67Boolean Algebra and Theorems, Minterms and Maxterms
4.8.4 Conversion of a Boolean Expression into
Standard POS Format
When finding the maxterms and converting to an n-variable POS standard format, in any
maxterm of the expression if a variable is not present, then do the followings:
1. Perform additional OR operation in the maxterm with a term containing that
variable ANDed with complement of that and get two POS maxterms using a
distributive law X + (Y × Z) = (X + Y) × (X + Z) with Y and Z as variable and its
complement, respectively.
2. Continue ORing till all n variable are present in each term of the n-variable POS.
3. Repeat the process for each ...