Download OU B.Sc 2018 Dec 3rd Year 3205 Electronics Digital Electronics Question Paper

FACULTY OF Science

B.Sc. V- Semester (CBCS)

Subject : ELECTRONICS (Digital Electronics)

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Paper -V (Dsc)

Time : 3 hours Max. Marks : 60

Part - A (5 X 3 = 15 Marks)

(Short Answer Type)

Note : Answer any Five of the following questions

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1. Convert decimal number 72905 to hexadecimal number.
2. Draw a circuit diagram of XOR gate and explain its working with truth table.
3. Show that (A + B)(A + B) = AB + AB using Boolean Algebra.
4. Explain sum of products (SOP).
5. Explain working of JK flip flop.

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6. Explain Johnson Counter.
7. Explain 4-bit Asynchronous counter.
8. Distinguish between PROM and EPROM.

Part-B (45 Marks)

(Essay Answer Type)

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Note : Answer any three from the following questions.

9. a) Explain 1's complement and 2's complement method for subtraction.
   OR
   b) Draw the circuit diagram of parallel binary adder consisting of full adders and explain its operation.
10. a) State and explain the basic laws in Boolean algebra.
    

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    OR
    b) Draw the circuit diagram of multiplexer and explain its operation.
11. a) Describe the working of Master Slave JK flip flop with neat circuit diagram.
    OR
    b) Discuss the various shift registers.

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12. a) Describe the organization and working of ROM.
    OR
    b) Explain working of decade counter with truth table and timing diagrams.

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