DCLD ( CODE:BTCS 303)- 10 MARKS QUESTIONS (NOTES 1)- IMPORTANT & EXPECTED QUESTIONS( IMPORTANT FOR PTU/KUK)

DCLD/ DIGITAL ELECTRONICS ( CODE:BTCS 303)  

(IMPORTANT & EXPECTED QUESTIONS-IMPORTANT FOR PTU EXAMS)

QUESTIONS CARRYING 10 MARKS:

Q1. Write short note on: (a) Successive approximation ADC,  (b) Ripple Carry Adder

Q2. What are programmable devices? what are their advantages? Explain in detail architecture of PLD.

Q3. (a) Draw logical diagram of 4-bit Twisted Ring Counter and explain its operation with the help of Timing diagram.
       (b) Design a MOD-3 synchronous counter using J-K Flip flop.

Q4. (a) Explain how PISO works?
       (b) Design a MOD-6 UP Counter.

Q5. (a) Explain how EPROM Memory cell works.
       (b) Explain the working of Dual Slope ADC.

Q6. Explain RAM organization. Explain RAM read and write operations.

Q7. Explain the circuit and functioning of Half and Full Adders.

Q8. Construct a 4-bit Ring Counter. Explain with the help of truth table and Timing diagram.

Q9. Find the SOP expression for the function:
          f (a,b,c,d) = Ʃm (1,3,4,6,7,9,11,12,13,15) using K-Map method.

Q10. Design a 32:1 MUX using 4:1 MUX and explain its working.

Q11. Design Mode-8 synchronous counter using T-flip flops.

Q12. (a) Write  a note on 3-state TTL.
         (b) Write down merits and demerits of TTL over MOS.

Q13. Design the circuit of R-2R ladder DAC and explain its operation. Also determine  the resolution of  the output from a DAC that has a 12- bit input.

Q14. Compare the characteristics of TTL and MOS families.

Q15. Given F= Ʃm (0,2,3,6,7,12,13,14) + d( 11,15), where d- don't care condition. Find simplified expression in:
         (a) In SOP form               (b) In POS form.    Also realize the simplified expression using Gates.