Previous
University Questions
Microprocessor
and Interfacing
UNIT-1
PART-A
1.
Write the differences between 8085
microprocessor and 8086 microprocessor? May/June2016-2Marks,
2. List
the interrupt signals in 8085 microprocessor? May/June2016-2Marks
3. Write
an ALP to display digit 7 at the output port01? May/June2016-2Marks
4. What
are the rotate instruction in 8085 Microprocessor May/June2016-2Marks
5. Draw
the STA Timing Diagram-
May/June2016-3Marks
6. Write
an ALP to transfer data from (10bytes) XX50 to XX90- May/June2016-3Marks
7.
Write Four differences between
Microprocessor and microcontroller-
May/June2014-2Marks, May 2013-2Marks, - May/June2012-2Marks
8.
List the Addressing modes of 8085
with examples for each- May/June2014-3Marks,
- May/June2012-2Marks
9.
Explain about the DAA instruction
of 8085 microprocessor- May/June2014-2Marks
10. Draw
the flag register of 8085 and write the function of each flag with example- May 2015-2Marks
11. List
the four primary operations commonly performed by the MPI.-Dec 2013-2Marks
12. What
the SIM and RIM instructions in 8085MP—Dec-2013-2Marks,May/June2015-3Marks
13. What
determines whether a microprocessor is considered an 8,16,32 bit device. —Dec-2012-2Marks
14. Identify
the Number of machine cycles and T states for STA2050H—Dec-2012-3Marks
15. Register
B has 93H and accumulator holds 15H illustrate the following -- May/June2012-3Marks
16. Define
instruction cycle, machine cycle and T-state May/June2012-3Marks
PART-B
1.
Describe the Addressing Modes of
8085 Microprocessors with examples.
May/June2016-4Marks,
2.
Explain data transfer and
arithmetic Instructions of 8085
Microprocessors with examples- May/June2016-6Marks,
3.
Write an ALP to sort N numbers- May/June2016-5Marks,
4.
Write an ALP to find the largest
numbers in an array- May/June2015-5Marks,
5.
Draw and describe the Timing
Diagram OUT 01H instruction- May/June2014-10Marks,
May/June2012-10Marks.
6. Write
an ALP program for sorting list of numbers in descending order using
subroutines- May/June2013-5Marks.
7.
Explain the internal architecture
of 8085 Microprocessors -Dec2013-10Marks.
May/June2012-10Marks.OR
8.
Explain 8085 Microprocessor
functional block diagram- June2014-10Marks
9. Explain
the pin out of 8085 Microprocessors -Dec2012-10Marks.OR
10. Draw
the schematic pin diagram of 8085 MP and explain the various functions of
8085MPU- May/June2013-10Marks
11. Draw
and describe the Timing Diagram IN instruction- Dec2012-10Marks.
UNIT-2
PART-A
1. List
the Interrupt Signals in 8085 microprocessor. (3M)May/June-2016,May/June-2014 Dec-2013,May/June-2102
2.
Match the following:
8255 Programmable interrupt controller
8279 Programmable Interval Timer
8254 Programmable peripheral interface.
8259 Programmable keyboard/display controller.(3M) May/June-2015
3. What
are the various registers used in 8259.(2M)
May/June-2015
4. If
the memory chip size is 1024* 4 bits, how many chips are require to make up
2K(2048) bytes of memory.(2M)Dec-2013
5. What
is a stack and write applications of stacks.(2M) Dec-2013
6. Identify
the port address in fig(2M) Dec-2013
7. Write
the format of status register in 8257(3M)
Dec-2013
8. Write
a code to display digit 4 at Port 01H(3M)
May/June-2102
9. List
the subroutine instructions of 8085.(2M)
May/June-2102
10. Draw
the format of the mode set register of 8257.(3M) May/June-2102
PART-B
1.
Discuss the stack and subroutine
concepts with examples.(5M) May/June-2016,April/May-2013,Dec-2012
2.
Describe the 8257 DMA controller
with a neat diagram.(10M) May/June-2016,May/June-2015,
April/May-2013
3.
Write short notes on D/A converter
of 8085.(5M) May/June-2016
4.
Explain about stack of 8085 with
PUSH and POP Instructions.(5M) May/June-2015
5.
Explain about the programmable
Interrupt controller 8259A.(10M)
May/June-2014,Dec-2012
6.
Write short notes on A/D converter
of 8085.(5M) May/June-2014
7.
Write short notes on JMP and CALL
Instructions of 8085 microprocessor(2M)
May/June-2014
8.
Explain 8085 vectored
interrupts.(5M) April/May-2013
9.
Explain about the 9085 vectored
interrupts(5M) Dec-2013
10. Explain
the interfacing of DAC and ADC(6M)
Dec-2013
11.
UNIT-3
PART-A
1.
Write short notes on RS-232 C.(3M) May/June-2016, April/May-2013,Dec-2012, May/June-2102
2. Explain
about the control word format of 8255 PPI in I/O mode.(3M) May/June-2014
3. Write
control word Register initialization instructions for the 8255A PPI to set
i)port A as an output port in mode 0 ,ii)port B as an output port in mode 1 for
I/O iii)PCU as an O/P in mode 0.(3M) April/May-2013.
4. List
out mode in keyboard and display controller 8279 interface (3M) April/May-2013.
5. What
is key bounce, Explain different key bouncing techniques? (3M) April/May-2013, Dec-2013
6. How
many types of errors are there in serial communication(3M) Dec-2013
7. Show
the formats of mode word, command word and status word of 8251(3M) Dec-2013
8. Define
BSR mode in 8255.(2M) May/June-2102
9. Compare
memory mapped I/O and Peripheral mapped I/O.(3M) May/June-2102
PART-B
1. Draw
and explain about the functional block diagram of 8255A (10M). May/June-2016, May/June-2015, May/June-2014
2. Write
short notes on 8253 interval timer of 8085(5M) May/June-2016
3. Write
short notes on USB.(2M) April/May-2013.
4. Write
short notes on modes of 8251 PCI (2M) April/May-2013,
Dec-2013
5. List
and explain the modes of 8254 Programmable interval timer(5M) Dec-2013
6. Explain
the procedure foe interfacing keyboard to microprocessor and draw the block
diagram of 8279, programmable keyboard/display interface device.(6M) Dec-2013
7. Write
the modes of programmable interface 8255 PPI(4M) Dec-2013
8. Discuss
the function of 8279 with a neat diagram.(10M) May/June-2102
UNIT-4
PART-A
1. List
the addressing modes of 8051 microcontroller.(2M) May/June-2016, April/May-2013.
2. Explain
the importance of bit addressable memory in 805.(2M) May/June-2015
3. Write
an 8051 assembly language program to move the contents of external program
memory to register R4.(3M) May/June-2015
4. Show
how LCD is interfaced with 8051 microcontroller Diagrammatically(3M) May/June-2015
5. What
are the interrupts available in 8051 microcontroller and their priorities(3M) May/June-2015
6. Explain
the programming model of 8057 microcontroller with diagram(5M) May/June-2014
7. Explain
the internal RAM organization of 8051 with the diagram(5M) May/June-2014
8. Discuss
the criteria for selecting a microcontroller device (2M) April/May-2013.
9. Explain
the 8051 standard registers(2M) Dec-2013
10. How
interrupts are handled in 8051 microcontroller? Explain(2M) Dec-2013
11.
PART-B
1. Explain
8051 stepper motor with a neat diagram.(5M)
May/June-2016
2. Explain
the 8051 DAC with a neat diagram.(5M) May/June-2016
3. Explain
about the functional block diagram of 8051 microcontroller (10M) May/June-2015.
4. Explain
8051 micro controller architecture and pin diagram along with memory
organization (10M) April/May-2013, Dec-2013
5. Write
a program to implement subroutines in 8051 microcontroller(4M) Dec-2013
6.
UNIT-5
PART-A
1. Write
difference s between 8085 microprocessor and 8086 microprocessor.(2M) May/June-2016
2. Write
about Flags of 8086 microprocessor.(3M) May/June-2016,
May/June-2014
3. Write
the registers of 8086 microprocessor.(2M)
May/June-2016, May/June-2015
4. What
are the advantages memory segmentation in 8086 Microprocessor.(2M) May/June-2015
5. Explain
the branch prediction logic of Pentium.(3M)
May/June-2015
6. What
are the advantages of using segment registers in 8086 Microprocessor.(2M) May/June-2014
7. Write
differences between 80386 microprocessor and 80486 micro-processor (2M) April/May-2013.
PART-B
1. Discuss
the features of advanced microprocessor of 80386,80486 and Pentium
Processor.(10M) May/June-2016
2. Explain
about the features of Advanced processors.(10M) May/June-2015, May/June-2014
3. Explain
the addressing modes of 8086 Microprocessor. Explain with examples(10M) May/June-2014, April/May-2013
4. Explain
the memory management of 80386.(5M) April/May-2013
5. Write
short notes on real mode and protected mode in Pentium processor(3M) April/May-2013
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