AU Solved Paper - 5

AU Solved Paper

May-2013

Microprocessors & Microcontrollers

Semester - VI (EEE)

Time: Three Hours]

[Maximum Marks: 100

Answer ALL Questions

PART - A (10 × 2 = 20 Marks)

Q.1 What is the function of program couter in 8085 microprocessor ?

 (Refer Two Marks Q.23 of Chapter - 1)

Q.2 How many address and data lines are used in 8086 microprocessor? (Topic not included in new syllabus (course - 2013))

Q.3 What is the different control machine control instructions used in 8085 microprocessor? (Refer section 2.2.8)

Q.4 What is the function of stack? (Refer Two Marks Q.28 of Chapter - 2)

Q.5 What are different peripheral interfacing used with 8085 microprocessor? (Refer Two Marks Q.6 of Chapter - 10)

Q.6 What are the output terminals in USART 8251 ? (Refer Fig. 11.4.1)

Q.7 What are the addressing modes of 8051 microcontroller? (Refer section 15.1)

Q.8 What is the function of R registers in 8051 microcontroller? (Refer section 14.5.1.1)

Q.9 Write an ALP to receive input from port P1.5 and if it is high then an output 35H is sent to port port 0? What are I/O instructions in 8051 microcontroller? (Refer example 16.2.3)

Q.10 How is pulse generated from microcontroller for stepper motor control? (Refer section 17.4)

PART-B (5 × 16 80 Marks)

Q.11 a) Explain with a neat block diagram the architecture of 8086 microprocessor. (Topic not included in new syllabus (course - 2013)) [16]

OR

b) i) Compare the features of 8085 and 8086 microprocessors. (Topic not included in new syllabus (course - 2013)) [6]

ii) Describe the interrupt structure of 8086 microprocessors. (Topic not included in new syllabus (course - 2013)) [10]

Q.12 a) i) Describe with suitable examples the data transfer instructions in 8085 microprocessor. (Refer section 2.2.1) [8]

ii) Write an 8085 assembly language program to sort numbers ascending orders. (Refer Lab Experiment 3.1.7) [8]

OR

b) i) Describe the categories of instructions used for data manipulations in 8085 microprocessor. (Refer section 2.1) [8]

ii) Describe with a suitable 8085 assembly language program the use of subroutine instructions. (Refer Lab Experiment 2.5.20) [8]

Q.13 a) i) Draw and explain the functional block diagram of 8255 PPI. (Refer section 8.3) [8]

ii) Draw and explain the functional block diagram of 8251 USART. (Refer section 11.4) [8]

OR

b) i) Draw and. explain the functional block diagram of 8279 keyboard display controller. (Refer section 12.5) [8]

ii) Draw and explain the functional block diagram of 8253 timer. (Refer section 10.2) [8]

Q.14 a) Explain with a neat block diagram the architecture of 8051 microcontroller (Refer section 14.3) [16]

OR

b) i) Explain the different addressing modes of 8051 microcontroller. (Refer section 15.1) [8]

ii) Explain the vectored interrupts in 8051 microcontroller.

(Refer section 16.7) [8]

Q.15 a) Describe with a neat diagram the stepper motor control using microcontroller. (Refer section 17.4) [16]

OR

b) Explain with a neat diagram the closed loop control of servomotor using microcontroller. (Not in new syllabus) [16]