PRESENTATION FOR DIGITAL AND LOGIC DESIGN.pptx

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1. PRESENTATION FOR DIGITAL AND LOGIC DESIGN PRESENTED BY: HAFEEZA MUSTAFA

2. TOPPIC : HALF ADDER PRESENTED BY: HAFEEZA MUSTAFA

3. DEFINITION: It is a combinational logic circuit . It is also called two bits adder .

4. EXPLANATION: We can design it by connecting one AND gate and one XOR gate . A half adder circuit consist of two input terminal namely A and B both of these add two input digits and generate the output . IN form of carry and other output sum .Thus there are two outputs . The output that obtains from the XOR gate is sum of the both bits numbers . The output obtained from AND gate is called carry .

5. Half adder designing: We can design half adder by using following steps .

6. TRUTH TABLE :

7. 2 VARIABLE K-MAP FOR SUM AND CARRY:

8. BOLEAN EXPRESSION:

9. HALF ADDER DIAGRAM: BY using XOR expression.

10. TOPPIC : FULL ADDER PRESENTED BY: HAFEEZA MUSTAFA

11. Definition : Full Adder is the adder which adds three inputs and produces two outputs. The first two inputs are A and B and the third input is an input carry as C-IN. The output carry is designated as C-OUT and the normal output is designated as S which is SUM.

12. EXPLANATION: A full adder is a circuit that has two AND gates , two EX_OR gates , and one OR gate. The full adder adds three binary digits. Among all the three , one is the carry that we obtain from the previous addition as C_IN , and the two are inputs A and B .

13. Full Adder Block:

14. K-Map For Sum:

15. K-Map For Carry:

16. Bolean Expression Equation Full Adder :

17. Deference Of Full Adder :

18. Application Of Half And Full Adder :