1. Department of Computer Engineering

2. 2 By Ahmad Bilal Digital Logic & Design

3. POS KMAPS

4. Department of Computer Engineering DUaLITY LAW The principle of duality tells us: If, in a boolean equation, we interchange the AND and OR operators and interchange '0' with '1' then the resultant boolean equation is also true.

5. Department of Computer Engineering STEPS Any theorem or identity in switching algebra remains true Change 0 with 1 and vice versa Change and with OR and vice versa

6. Department of Computer Engineering Example 1If we are aware that (A.B)+(A.C) = A+B).(A+C)

7. Department of Computer Engineering Duality LAW A+0=A = A·1=A.