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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
M.Sc.DEGREE EXAMINATION PHYSICS
FIRSTSEMESTER APRIL 2018
PH 1813- ELECTRONICS
Date: 25-04-2018 Dept. No. Max. 100 Marks
Time: 09:00-12:00
Part A
Answer ALL Questions. (10x2=20)
1. Obtain an expression for the output of an inverting operational amplifier.
2. Write any two properties of an ideal Op-Amp.
3. State the role of the "Carry Flag" of μP8085.
4. Explain the function of "LDA 4500" instruction of μP8085.
5. Write any two instructions of μP8085 which clears the register
6. Explain the role of the "DAA" instruction of μP8085.
7. Discuss the function of the "READY"line of μP8085.
8. Write a note on the "SIM" instruction ofμP8085.
9. Explain the use of "EXX"instruction of μPZ80.
10. Explain the use of the index registers of Z80.
Part B
Answer any FOUR Questions (4x7.5=30)
11. Draw a neat circuit diagram ofan Op-amp basedintegrator andderive an expression for the output voltage.
12. With an example for each, explain any eight arithmetic instructionsofμP8085.
13. Develop an ASM program for μP8085 to multiply 08h with 05h.
14. Write notes on any three hardware interrupts of μP8085.
15. With a neat block diagram, explain the internal architecture of μPZ80.
Part C
Answer any FOUR Questions (4x12.5=50)
16. Solve the simultaneous equations, X Y 4 and X Y using Op-amps.
17. With a neat block diagram, explain the internal architecture of μP8085.
18. With two sample instructions for each, explain all the addressing modes in μP8085.
19. Develop a program for to find the factorial of a byte in memory.
20. Develop a program for Z80 to sort an array of FFh bytes in memory.