LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION –COMPUTER SCIENCE
SUPPLEMENTARY EXAMINATION – JUNE 2007
CS 3101 - APPLIED ELECTRONICS
Date & Time: 25/06/2007 / 9:00 - 12:00
Dept. No.
Max. : 100 Marks
PART-A
ANSWER ALL QUESTIONS.
1.
2.
3.
4.
5.
(10 x 2 = 20)
What is meant by ‘doping’?
Define Valence band and Covalence bond.
What are the characteristics of ideal operational amplifier?
What is A/D and D/A converter?
State Demorgan’s law.
6. Reduce the following expressions using Boolean laws (A . B ( B . A ))
7. Draw T and D flip flop circuit diagrams.
8. What is Race Around condition?
9. Define EEPROM and UVPROM.
10. What is mapping in cache memory?
PART-B
ANSWER ALL QUESTIONS:
(5 x 8 = 40)
11. a) Describe the reverse characteristics of Zener diode with neat diagram.
(OR)
b) What is Solar cell? Describe its working.
12. a) How does an Op-amp work as a differentiator?
(OR)
b) Describe the working of weighted resistor converter.
13. a) Reduce the following expression using karnaugh map
(i) A B C + A B C + A B C + A B C
(ii) (0,2,5,7,8,10,13,15)
(OR)
b) Briefly explain the function of Multiplexer.
14. a) Briefly explain the function of JK flip flop.
(OR)
b) Describe the working of Binary- Ripple-Up counter.
15. a) Explain Memory hierarchy.
(OR)
b) Explain Virtual Memory.
PART-C
ANSWER ANY TWO:
(2 x 20 = 40)
16. a) What is LED? Describe its working with neat diagram.
b) Explain Flash A/D converter.
17. a) Explain Full adder and Half adder with diagram.
b) With neat diagram describe the working of Ring counter.
18. a) Write any two mapping procedures in cache memory organization.
b) Explain D and JK flip flop left shift registers.
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