M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Third Semester
Physics
MICROPROCESSOR AND ELECTRONIC
INSTRUMENTATION
(CBCS 2016 onwards)
Time 3 Hours Maximum 75 Marks
Section A (10 x 2 20)
Answer all the questions.
1. Why the data bus is bi-directional?
2. What is the function of stack pointer?
3. What is assembly language?
4. What are the instruction set of 8085?
5. List the advantages of microcontrollers.
6. Write down the features of Intel 8051?
7. Define interfacing.
8. Mention the use of Latch.
9. Define photovoltaic cell.
10. Give the principle of transducers.
Sub. Code
521303
RW-936
2
Sp 1
Section B x 5 25)
Answer all the questions, choosing either or
11. State the modes in which 8086 operate.
Or
Specify the four control signals commonly used by
the 8085 P.
12. Explain the pseudo instructions.
Or
Explain branch instructions.
13. Name the interrupts of 8051 microcontroller.
Or
What are the features of 8051 microcontroller?
14. Draw the command word format for 8251.
Or
What are the functions performed by Intel 8251
chip?
15. Explain the function of successive approximation
method for A/D converter.
Or
Explain the working of piezoelectric transducers.
RW-936
3
Sp 1
Section C x 10 30)
Answer any three of the following.
16. With neat diagram, describe the architecture of 8085.
17. Explain stack operations.
18. Draw the architecture of 8051 microcontroller and
describe the function of each block.
19. Explain the function of 8259 programmble DMA
controllers.
20. Explain the function of capacitive displacement
transducer.
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