2. Digital logic representation In digital logic system,events are described as either 0 or 1 Two logic states 1= logic High 0 = logic Low

3. DIGITAL OPERATION ARE FORMED BY 5 BASIC LOGIC GATES NOT GATE AND GATE OR GATE NAND GATE NOR GATE

4. Each logic gate is represented by its:- symbol, logic equation and truth table A) LOGIC SYMBOL is a unique pictorial representation of logic function. B) LOGIC EQUATION are used to represent the logic function. C) TRUTH TABLE lists of all possible input combinations into a gate and the resulting outputs.

5. Logic symbol NOT GATE

6. LOGIC SYMBOL AND GATE

7. LOGIC SYMBOL OR GATE

8. LOGIC SYMBOL NAND GATE

9. LOGIC SYMBOL NOR GATE

10. ASSESMENT DRAW THE LOGIC SYMBOL FOR:- 1) AND GATE 2) NOR GATE 3) NAND GATE

11. Logic equation NOT GATE A Y= A __ Y=A ___

12. LOGIC EQUATION AND GATE Y= A.B A B

13. LOGIC EQUATION OR GATE Y=A+B A B

14. LOGIC EQUATION NAND GATE Y= A.B _____ A B Y= A.B _____

15. LOGIC EQUATION NOR GATE Y= A+B ______ A B Y= A+B ______

16. ASSESMENT WRITE THE LOGIC EQUATION FOR:- 1) NAND GATE 2) OR GATE 3) NOT GATE Y= A.B ____ Y= A __ Y= A+ B

17. TRUTH TABLE NOT GATE Y= A __ Y=A ___ A __ AY= A 0 1 10

18. TRUTH TABLE AND GATE Y= A.B A B AB 0 0 01 1 0 1 1 0 0 0 1

19. TRUTH TABLE OR GATE Y=A+B A B AB 0 0 01 1 0 1 1 0 1 1 1

20. TRUTH TABLE NAND GATE Y= A.B _____ A B Y= A.B _____ ABY=A.B 0 0 01 1 0 1 1 1 1 1 0 ___

21. TRUTH TABLE NOR GATE Y= A+B ______ A B Y= A+B ______ ABY=A+ B 0 0 01 1 0 1 1 1 0 0 0 ____

22. ASSESMENT DRAW THE TRUTH TABLE OF:- 1) AND GATE 2) NOR GATE ABY=A.B 0 0 01 1 0 1 1 0 0 0 1 ABY=A+ B 0 0 01 1 0 1 1 1 0 0 0 ____

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