Electrical Engineering ⇒ Topic : Converting Expression into Standard SOP or POS Forms

Converting Expression into Standard SOP or POS Forms

SOP form can be converted to standard SOP form by ANDing the terms in the expression with terms formed by ORing the literal and its complement which are absent in that term. Let us consider the following expression of SOP:

                               Y = AB + BC + CA

This expression is of three literals A, B and C. In the term AB, the literal C is missing. We form the (C + C ) and AND it with AB. Therefore, we get AB (C + C)= ABC + ABC.

Similarly, POS form can be converted to standard POS form by ORing the terms in the expression with the forms by ANDing the variable and its complement which are absent in that term.