The widely used method for Boolean function representation, called Bin
ary Decision Diagram (BDD), and its variation, the Ordered Binary Deci
sion Diagram (OBDD), occasionally become time and space consuming for
efficient manipulations with increase of number of its input variables
. It would appear intuitively that a more efficient approach can be de
rived by viewing the function from the perspective of its output value
s. In this paper, such an approach based on the concept of input impli
cit/output explicit representation is developed. These output value ar
ray graphs (OVAGs) are derived for some sample circuits to illustrate
their compact size. These are, however, preliminary results and additi
onal research is needed to fully demonstrate the usefulness of OVAGs.