a.

6.

Another basic law of Boolean Algebra is the COMMUTATIVE law,

d.

which states: "When inputs to a logic diagram are ANDed or ORed,

f.

h.

affect the binary value of the output." For example, AB = BA; A+B =

B+A; PDQ = QPD; C+J+S = J+C+S; etc. The logic diagrams and

truth tables below show that the output Boolean expression of an

AND circuit or an OR circuit can be written without regard to the

order of the factors.

COMMUTATIVE LAW

Indicate two ways the output Boolean expressions can be

written for each of the following.

a.

b.