M.Sc. DEGREE EXAMINATION, APRIL 2016
Physics
MICROPROCESSOR AND ELECTRONIC
INSTRUMENTATION
(2011 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 2 20)
Answer all questions.
1. List out the logical operations of ALU.
2. What is a timing unit?
3. Draw a flow chart for conditional structure.
4. Give any five branch group instruction sets.
5. What are advantages for 16 bit microcontroller?
6. How many bytes are available in internal RAM in 8051?
7. What is a tri-state buffer?
8. What is memory mapped I/O technique?
9. Define photoconductivity.
10. Define piezoelectric effect.
Sub. Code
521303
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Part B 5 25)
Answer all questions choosing either or
11. Explain about the accumulator and stack pointer.
Or
Discuss about the direct addressing and register
addressing modes.
12. Explain the instruction set LXI, LDAX, XCHG, DAA
and CMC.
Or
Describe CALL and RET using subroutine.
13. Write a program for the multiplication of two 8 bit
numbers.
Or
Discuss about the operational features of memory
interfacing of 8051.
14. Describe the DMA controller 8257.
Or
Write a programme for a stepper motor for 8085.
15. Explain about the resistor ladder network
method.
Or
Discuss about the successive approximation
method.
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Part C 10 30)
Answer any three of the following.
16. Draw a block diagram of 8085 and explain each block.
17. Write a program to find the largest number in a data
array.
18. Discuss the architecture of 8051.
19. Explain the communication interface of 8251 with a help
of block diagram.
20. Describe in detail the classification of transducers.