Download SGBAU BCA 2019 Summer 2nd Sem Digital Techniques II Question Paper

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B.C.A. (Part—I) Semester—II Examination

2ST3 : DIGITAL TECHNIQUES—II

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Time : Three Hours | [Maximum Marks : 60

Note :

1. All questions are compulsory.
2. Draw neat diagrams wherever necessary.
3. Due credit will be given to neatness.

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1. (A) What is D-Flip-Flop ? Explain with Diagram and Truth Table. 6
   (B) Explain construction and working of astable multivibrator with suitable diagram. 6
   OR
2. (A) Define Flip-Flop and differentiate RS and CLKRS Flip-Flop. 6
   (B) Explain:
   

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   (i) Monostable transistorized multivibrator
   (ii) Bistable transistorized multivibrator. 6
3. (A) What is Counter ? Explain Asynchronous 4-bit Counter with Diagram and Truth Table. 6
   (B) Explain up-down counters with suitable diagram. 6
   OR

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4. (A) State and explain applications of Modified Asynchronous Counter. 6
   (B) Draw and explain the diagram of IC 74931. 6
5. (A) Explain:
   (i) SISO
   (ii) PISO. 6
   

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   (B) Explain IC version of Shift register-7495 with connection diagram. 6
   OR
6. (A) Explain the working of Ring Counter with neat diagram. 6
   (B) What is Johnson’s Counter ? Explain with Connection Diagram and Truth Table. 6
7. (A) Explain difference between Primary and Secondary Memory. 6
   

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   (B) Explain:
   (i) RAM
   (ii) ROM
   (iii) EPROM. 6
   OR

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8. (A) Explain static RAM Cell with suitable diagram. 6
   (B) What is meant by Winchester disk ? Explain. 6
9. (A) What is A/D and D/A converter ? Explain the working of weighted resistor type D/A Converter. 6
   (B) Draw and explain IC ADC 0808 with block diagram. 6
   OR

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10. (A) Draw and explain IC DAC 0808 with suitable diagram. 6
    (B) Draw the block diagram of successive approximation type A/D Converter and explain. 6

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