B.Tech-B.Tech Biomedical Engineering Microprocessor and Microcontrollers(Madurai Kamraj University - Directorate of Distance Education (MKU-DDE)-2010)
Friday, 23 August 2013 04:14Duraimani
(Established under section 3 of UGC Act,1956)
Course & Branch :B.Tech – BME Max. Marks :80
Title of the Paper :Microprocessor and Microcontrollers
Sub. Code :524502/624502 Time : 3 Hours
Date :21/04/2010 Session :AN
PART - A (10 x 2 = 20)
Answer ALL the Questions
1. What is the function of HOLD and HLDA?
2. Let accumulator content is 9AH and CY = 1. What will be content of CY after RRC instruction is executed?
3. What happens in 8086 when DEN = 0 and DIR = 1?
4. What is the storage space required to store the interrupt vectors of 8086?
5. What are the features of ROM and RAM in 8051 microcontroller?
6. Name any four conditional jump instructions of 8051.
7. Write the different modes of operation of 8255.
8. What is meant by DMA operation? State its advantages.
9. If a 10bit ADC has a reference voltage of 10v, What is the resolution of ADC?
10. What are the types of EPROM?
PART – B (5 x 12 = 60)
Answer All the Questions
11. Draw the timing diagram for MVI A,32h.
(or)
12. a. What are the hardware interrupts in 8085? Explain it briefly.(8)
b. Write an assembly language program to add two 16 bit numbers. (4)
13. Explain the architecture of 8086 with a block diagram.
(or)
14. Discuss the addressing modes of 8086 with suitable examples.
15. Explain the different modes of operation of serial port in 8051 indicating various registers associated with it.
(or)
16. Explain the modes of timer with neat diagram.
17. What are the capabilities of 8251A – USART for asynchronous communication purpose? Explain its operation with a neat diagram.
(or)
18. Draw the pin diagram and functional block diagram of 8257 programmable DMA controller and explain the function of each pin and block in detail.
19. a. Design a microprocessor based system with EPROM of memory capacity 4KB and SRAM of memory capacity 8KB. (8)
b. Program a DAC chip to produce a sine wave on an oscilloscope. (4)
(or)
20. With a neat diagram explain the interfacing of a stepper motor.
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