Laws of Duality (MA187E)

The complement of a sum composed of the element “a” and “b” is equivalent to the complement of the element “b”. The complement of a product composed of the elements “a” and “b” is equivalent to the disjunction of the complement of element “a” and the complement of element “a”. Figure 1 shows the equivalent circuit.


Figure 1
Figure 1



Law of Duality:





Mathematic Notation:



Logic Notation:






Circuit Bench