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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
B.Sc.DEGREE EXAMINATION COMPUTER SCIENCE
THIRDSEMESTER APRIL 2018
PH 3106- APPLIED ELECTRONICS
Date: 05-05-2018 Dept. No. Max. 100 Marks
Time: 09:00-12:00
PART A
ANSWER ALL QUESTIONS (10×2=20)
1. What is a semiconductor? Name the different types.
2. Draw the logic symbol of a T-flip flop and give its truth table.
3. Write any four characteristics of ideal operational amplifier.
4. What is multiplexer?
5. Define Fermi level.
6. State Demorgan's theorem.
7. Simplify using K map Y
8. Give the difference between RAM ROM
9. Define catch memory.
10. Simplify Y
PART B
ANSWER ANY FOUR QUESTIONS (4×7.5=30)
11. Draw the block diagram and explain the memory hierarchy in a computer system.
12. Explain the working of a non-inverting amplifier with a neat diagram.
13. Discuss the working of a Johnson's counter with a neat diagram and give its truth table
14. Explain the working of a 4 input multiplexer. Give its logic circuit and truth table
15. Define α β of a transistor and derive the relation between them.
16. Write short notes on Solar cell and Zener diode.
PART C
ANSWER ANY FOUR QUESTIONS (4×12.5=50)
17. Describe the operation of a NPN transistor in common emitter mode. Discuss the input and output characteristics.
18. Explain with neat diagram the working of a successive approximation A/D convertor.
19. What is racing in JK flip flop? How it is solved in JK Master Slave flip flop?
20. Explain the different types of registers in a computer
Explain with circuit the working of a D flip flop
21. Simplify using K map
Explain NAND latch
22. (a)Explain the working of a full adder and draw its truth table
Using NOR gate construct NOT and AND gate 4.5)