JNTU Kakinada B-Tech 3-2 RT32041 I MICRO PROCESSORS AND MICRO CONTROLLERS R13 April 2018 Question Paper

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define flag register. [3M]
b) What is meant by end of program? [3M]
c) Difference between static and dynamic RAM. [4M]
d) State the function of bit scan instructions. [4M]
e) Define single chip microcomputer. [4M]
f) What is ARM? [4M]
PART -B
2 a) Draw the block diagram of 8086 and explain BIU and EU [8M]
b) Explain various instruction formats with examples?
[8M]
3 a) Develop an assembly language program to find the sum of numbers from 1 to 100. [8M]
b) List out assembler directives of 8086 and explain them briefly?
[8M]
4 a) Explain different control word formats of 8255 PPI? [8M]
b) Describe the operation of a parallel comparator A/D converter.
[8M]
5 a) List out the salient features of 80386DX? [8M]
b) Write short notes on register organisation of 80386?
[8M]
6 a) Write an 8051 program to receive a serial byte through RxD. [8M]
b) Describe the serial port operation in 8051 microcontroller?
[8M]
7 Discuss the interrupt structure in PIC microcontrollers. List the various sources in
PIC 16C71. Write an initialization program to enable all of the interrupts in 16C74.
[16M]

*****
R13
SET – 1

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define flag register. [3M]
b) What is meant by end of program? [3M]
c) Difference between static and dynamic RAM. [4M]
d) State the function of bit scan instructions. [4M]
e) Define single chip microcomputer. [4M]
f) What is ARM? [4M]
PART -B
2 a) Draw the block diagram of 8086 and explain BIU and EU [8M]
b) Explain various instruction formats with examples?
[8M]
3 a) Develop an assembly language program to find the sum of numbers from 1 to 100. [8M]
b) List out assembler directives of 8086 and explain them briefly?
[8M]
4 a) Explain different control word formats of 8255 PPI? [8M]
b) Describe the operation of a parallel comparator A/D converter.
[8M]
5 a) List out the salient features of 80386DX? [8M]
b) Write short notes on register organisation of 80386?
[8M]
6 a) Write an 8051 program to receive a serial byte through RxD. [8M]
b) Describe the serial port operation in 8051 microcontroller?
[8M]
7 Discuss the interrupt structure in PIC microcontrollers. List the various sources in
PIC 16C71. Write an initialization program to enable all of the interrupts in 16C74.
[16M]

*****
R13
SET – 1

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define carry flag in flag register [3M]
b) What is mean by End of procedure? [4M]
c) Write any three applications of DAC? [4M]
d) State the function of Bit test instructions? [4M]
e) Define accumulator? [3M]
f) Draw a simple PIC reset circuit? [4M]
PART -B
2 a) Describe the memory segmentation and instruction queue? [8M]
b) Give the difference between minimum mode and maximum mode of operation
in 8086 microprocessor?
[8M]
3 a) Give the difference between maskable and non-maskable interrupts? [8M]
b) Write an ALP in 8086 to exchange a block of N bytes of data between source
and destination?
[8M]
4 a) With a neat diagram explain the architecture of 8255? [8M]
b) Explain the need of DMA data transfer?
[8M]
5 a) With a neat sketch explain protected mode addressing without paging unit? [8M]
b) Explain how paging mechanism provides an effective technique to manage the
physical memory for multitasking systems?
[8M]
6 a) Explain various modes of operation of timer /counters in 8051? [8M]
b) State the advantages of microcontrollers and explain them?
[8M]
7 What do you mean by the prescaling of PIC timers? What is the advantage of
doing so? Is it possible to apply the prescaling to watchdog timer? If so justify.
[16M]
*****

R13
SET – 2

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define flag register. [3M]
b) What is meant by end of program? [3M]
c) Difference between static and dynamic RAM. [4M]
d) State the function of bit scan instructions. [4M]
e) Define single chip microcomputer. [4M]
f) What is ARM? [4M]
PART -B
2 a) Draw the block diagram of 8086 and explain BIU and EU [8M]
b) Explain various instruction formats with examples?
[8M]
3 a) Develop an assembly language program to find the sum of numbers from 1 to 100. [8M]
b) List out assembler directives of 8086 and explain them briefly?
[8M]
4 a) Explain different control word formats of 8255 PPI? [8M]
b) Describe the operation of a parallel comparator A/D converter.
[8M]
5 a) List out the salient features of 80386DX? [8M]
b) Write short notes on register organisation of 80386?
[8M]
6 a) Write an 8051 program to receive a serial byte through RxD. [8M]
b) Describe the serial port operation in 8051 microcontroller?
[8M]
7 Discuss the interrupt structure in PIC microcontrollers. List the various sources in
PIC 16C71. Write an initialization program to enable all of the interrupts in 16C74.
[16M]

*****
R13
SET – 1

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define carry flag in flag register [3M]
b) What is mean by End of procedure? [4M]
c) Write any three applications of DAC? [4M]
d) State the function of Bit test instructions? [4M]
e) Define accumulator? [3M]
f) Draw a simple PIC reset circuit? [4M]
PART -B
2 a) Describe the memory segmentation and instruction queue? [8M]
b) Give the difference between minimum mode and maximum mode of operation
in 8086 microprocessor?
[8M]
3 a) Give the difference between maskable and non-maskable interrupts? [8M]
b) Write an ALP in 8086 to exchange a block of N bytes of data between source
and destination?
[8M]
4 a) With a neat diagram explain the architecture of 8255? [8M]
b) Explain the need of DMA data transfer?
[8M]
5 a) With a neat sketch explain protected mode addressing without paging unit? [8M]
b) Explain how paging mechanism provides an effective technique to manage the
physical memory for multitasking systems?
[8M]
6 a) Explain various modes of operation of timer /counters in 8051? [8M]
b) State the advantages of microcontrollers and explain them?
[8M]
7 What do you mean by the prescaling of PIC timers? What is the advantage of
doing so? Is it possible to apply the prescaling to watchdog timer? If so justify.
[16M]
*****

R13
SET – 2

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define overflow flag [3M]
b) What is mean by End of segment [4M]
c) Write any three salient features of ADC 7109? [4M]
d) State the function of Shift double instructions [4M]
e) Define stack pointer [3M]
f) Write the significance of program counter latch [4M]
PART -B
2 a) Briefly explain register organization in 8086 microprocessor [8M]
b) Draw and explain 8086 timing diagram during write operation
[8M]
3 a) Explain the stack structure of 8086 in detail with a sketch [8M]
b) Discuss about various interrupts in 8086
[8M]
4 a) Draw the interfacing diagram of an ADC to 8086 [8M]
b) Explain the following data transfers (i) Programmed I/O (ii) Interrupted I/O.
[8M]
5 a) Describe the addressing modes to facilitate efficient execution of higher level
programs
[8M]
b) Write short notes on memory addressing in real mode
[8M]
6 With a neat sketch explain the architecture of 8051
[16M]
7 What are various addressing modes in PIC microcontrollers? What is the role
of INDF in indirect addressing mode
[16M]
*****
R13
SET – 3

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B) 2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define flag register. [3M]
b) What is meant by end of program? [3M]
c) Difference between static and dynamic RAM. [4M]
d) State the function of bit scan instructions. [4M]
e) Define single chip microcomputer. [4M]
f) What is ARM? [4M]
PART -B
2 a) Draw the block diagram of 8086 and explain BIU and EU [8M]
b) Explain various instruction formats with examples?
[8M]
3 a) Develop an assembly language program to find the sum of numbers from 1 to 100. [8M]
b) List out assembler directives of 8086 and explain them briefly?
[8M]
4 a) Explain different control word formats of 8255 PPI? [8M]
b) Describe the operation of a parallel comparator A/D converter.
[8M]
5 a) List out the salient features of 80386DX? [8M]
b) Write short notes on register organisation of 80386?
[8M]
6 a) Write an 8051 program to receive a serial byte through RxD. [8M]
b) Describe the serial port operation in 8051 microcontroller?
[8M]
7 Discuss the interrupt structure in PIC microcontrollers. List the various sources in
PIC 16C71. Write an initialization program to enable all of the interrupts in 16C74.
[16M]

*****
R13
SET – 1

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define carry flag in flag register [3M]
b) What is mean by End of procedure? [4M]
c) Write any three applications of DAC? [4M]
d) State the function of Bit test instructions? [4M]
e) Define accumulator? [3M]
f) Draw a simple PIC reset circuit? [4M]
PART -B
2 a) Describe the memory segmentation and instruction queue? [8M]
b) Give the difference between minimum mode and maximum mode of operation
in 8086 microprocessor?
[8M]
3 a) Give the difference between maskable and non-maskable interrupts? [8M]
b) Write an ALP in 8086 to exchange a block of N bytes of data between source
and destination?
[8M]
4 a) With a neat diagram explain the architecture of 8255? [8M]
b) Explain the need of DMA data transfer?
[8M]
5 a) With a neat sketch explain protected mode addressing without paging unit? [8M]
b) Explain how paging mechanism provides an effective technique to manage the
physical memory for multitasking systems?
[8M]
6 a) Explain various modes of operation of timer /counters in 8051? [8M]
b) State the advantages of microcontrollers and explain them?
[8M]
7 What do you mean by the prescaling of PIC timers? What is the advantage of
doing so? Is it possible to apply the prescaling to watchdog timer? If so justify.
[16M]
*****

R13
SET – 2

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define overflow flag [3M]
b) What is mean by End of segment [4M]
c) Write any three salient features of ADC 7109? [4M]
d) State the function of Shift double instructions [4M]
e) Define stack pointer [3M]
f) Write the significance of program counter latch [4M]
PART -B
2 a) Briefly explain register organization in 8086 microprocessor [8M]
b) Draw and explain 8086 timing diagram during write operation
[8M]
3 a) Explain the stack structure of 8086 in detail with a sketch [8M]
b) Discuss about various interrupts in 8086
[8M]
4 a) Draw the interfacing diagram of an ADC to 8086 [8M]
b) Explain the following data transfers (i) Programmed I/O (ii) Interrupted I/O.
[8M]
5 a) Describe the addressing modes to facilitate efficient execution of higher level
programs
[8M]
b) Write short notes on memory addressing in real mode
[8M]
6 With a neat sketch explain the architecture of 8051
[16M]
7 What are various addressing modes in PIC microcontrollers? What is the role
of INDF in indirect addressing mode
[16M]
*****
R13
SET – 3

Code No: RT32041
III B. Tech II Semester Regular/Supplementary Examinations, April – 2018
MICRO PROCESSORS AND MICRO CONTROLLERS (Common to Electronics and Communication Engineering, Electronics and Instrumentation
Engineering Electronics and Computer Engineering)Time: 3 hours Max. Marks: 70
Note: 1. Question Paper consists of two parts (Part-A and Part-B)2. Answering the question in Part-A is compulsory
3. Answer any THREE Questions from Part-B
*****
PART ?A
1 a) Define HALT? [3M]
b) What do you mean by PUBLIC? [3M]
c) Write any three salient features of mode 2 of 8255? [4M]
d) State the function of set byte instruction? [4M]
e) Define SFR Register bank? [4M]
f) Draw the status register of 16CXX. [4M]
PART -B
2 a) With examples explain different addressing modes supported by 8086 [8M]
b) With a neat diagram explain a typical maximum mode operation of 8086
system
[8M]
3 a) Explain while loop and repeat-until structures with an example [8M]
b) What is macro? Give the difference between a macro and a subroutine
[8M]
4 Draw the internal architecture of USART 8251 and explain its different status
and modes and control formats neatly.
[16M]
5 a) Explain the types of registers available in 80386 and explain them briefly [8M]
b) List out the data types supported by 80386
[8M]
6 a) Explain the internal and external interrupts in 8051 [8M]
b) Discuss about the priority of the interrupts in 8051. And state for which
interrupt highest priority is given?
[8M]
7 a) With a neat sketch explain ARM architecture [8M]
b) Briefly explain timers in PIC 16C61/71. [8M]
*****
R13
SET – 4