Download OU B.Sc 2016 April 3rd Year 2046 Electronics Question Paper

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Code No. 2046

FACULTY OF SCIENCE

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B.Sc. III Year Examination, March / April 2016

Subject: ELECTRONICS

Paper - IV(a) : Embedded Systems and Applications

Time : 3 Hours Max.Marks : 100

Note: Answer all questions from Part — A and any four questions from Part - B.

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PART - A (4x20 = 80 Marks)

(Essay Answer Type)

1. 1) Discuss different modes of Timer in 8051 micro controller.

   20

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2. a) i) Explain the various addressing modes with examples of instructions.

   ii) Write a program to multiply two numbers stored in RO and R1.

   OR

   b) i) Explain JUMP and CALL instructions.

   ii) Write a program to arrange a given set of numbers in ascending order.

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   20

3. a) Explain the interfacing of ADC chip with 8051 micro controller.

   OR

   b) Discuss the interfacing of DAC chip with 8051 micro controller.

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   20

4. a) Explain the method of temperature measurement using 8051 micro controller.

   OR

   b) Explain interfacing of 8051 micro controller with LCD for displaying information.

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   20

PART - B (4x5 = 20 Marks)

(Short Answer Type)

Note: Answer any four questions.

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1. Discuss data types and assembler directives in 8051 micro controller.
2. Explain the Flag bits and PSW register in 8051 micro controller.
3. Discuss the instructions:
   1. MUL AB
   2. DIV AB with examples.

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4. Define the terms:
   1. Dataframing
   2. Data transfer rate
   3. RS232 standards in serial communication.
5. Explain DA instruction with sample program.

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6. Discuss the various interrupts of 8051 micro controller.
7. Explain different MOV instructions used in 8051 micro controller.
8. Distinguish between parallel and serial communication with examples.

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