RAJIV GANDHI COLLEGE OF ENGINEERING AND TECHNOLOGY
DEPARTMENT OF BIO-MEDICAL ENGINEERING
SUBJECT NAME: MICROPROCESSORS AND ITS APPLICATIONS YEAR: III
SUBJECT CODE: BM T54 SEMESTER: V
PART-A 2 MARKS
UNIT- I
1. What is bus? What are the types
2. What is multiplexing and what is its advantage?
3. What is the physical memory space in 8085?
4. What is ALE?
5. What is flag?
6. What is the general purpose registers in 8085?
7. What are the flags available in 8085 microprocessor?
8. What is instruction cycle?
9. What is processor cycle or machine cycle? Write the Machine Cycle of 8085?
10. What is T-States
UNIT II
1. What are interrupts?
2. Define stack
3. What are the arithmetic operations available in microprocessor 8085?
4. What are the branch conditions available in microprocessor 8085?
5. What is cascade buffer?
6. What is the location for the RST 5.5 interrupts service routine?
7. List the components needed to interface alphanumeric displays with 8085
8. Explain logic operation ROTATE and its types.
9. What are the conditions applied in the logic operation: COMPARE.
10. Explain control signals and its operations.
UNIT III
1. Write a short note on 8255 programmable peripheral interface
2. Write a short note on 8253 programmable interval timer
3. Write a short note on 8259 programmable interrupt controller
4. What is RS-232?
5. What is bit set reset mode of 8255 PPI?
6. What is Two-key lockout mode?
7. What is N-key Rollover mode?
8. For an A/D converter circuit why Vref should be a stabilized supply?
9. What are DAC and write their types
10. Define UART
UNIT IV
1. What is Timing Diagram?
2. What are the flag registers present in 8086?
3. What is the function of Direction flag?
4. Explain the features of 8086.
5. What are the types of registers present in 8086?
6. Draw the pin diagram of 8086
7. List some major features of 80x86 and Pentium family processors.
8. What are the addressing modes in 8086?
9. What are the various internal components present in 8086
10. Draw the block diagram of physical address formation in 8086
UNIT V
1. Define power angle
2. Write about power factor measurements
3. How microprocessor is used in frequency measurement?
4. How microprocessor is used in strain measurement?
5. Give some applications of microprocessor in industrial control system
6. Describe the function of temperature sensor in temperature control system
7. Give some applications of stepper motor interfaced with microprocessor
8. Write a short note on seven segment display
PART-B 11 MARKS
UNIT- I
1. With the neat diagram explain the architecture of 8085 microprocessor
2. Draw and explain the timing diagrams of memory read cycle and I/O write cycle in 8085 microprocessor
3. Discuss the operations of five machine cycles involved in 8085 with neat timing diagram
4. Discuss about instruction format with examples
5. What are the 16-bit registers available in 8085 microprocessor? briefly discuss the roles
UNIT- II
1. What is debugging? Explain different types
2. Write an assembly language program to check whether the number stored in the location 4500 is ODD or EVEN. If the number is ODD, store 01 in the location 4600. Otherwise stores 00
3. Explain the classification of 8085 instruction set with suitable example
4. Write the assembly language program to add two 16-bit numbers using 8085 instruction.
5. Explain the data transfer instructions of 8085 with examples
6. Explain memory mapped I/O and peripheral I/O in 8085 microprocessor
7. Explain any two rotate instructions with examples
8. Briefly discuss about different types of software time delay techniques
UNIT- III
1. Explain the interfacing of DAC with 8085.
2. With a neat block diagram explain the operation of interrupt controller 8259.
3. Discuss in detail about DMA data transfer with neat diagram
4. Explain the functional block diagram of the programmable peripheral interface 8255
5. With interfacing block diagram. explain how an ADC can be interfaced with 8085
6. Explain the operations of modes ‘0’, ‘1’ and ‘2’ of 8253 programmable interval timer with neat timing diagrams and appropriate programs
UNIT- IV
1. Explain the architecture of 8086
2. Discuss the interrupt structure of 8086
3. Discuss the various addressing modes of 8086 with suitable examples
4. With example, explain the 8086 arithmetic and logical instructions in detail.
5. Explain the minimum and maximum modes of operations in 8086 microprocessor
6. Draw the internal block diagram of 8085 microprocessor and discuss in detail about various blocks
UNIT- V
1. Discuss in detail about the microprocessor based temperature control system.
2. How to interface stepper motor with microprocessor and explain its working Principle with assembly language program
3. Explain in detail about microprocessor based traffic light controller system.
4. Write an assembly language program in 8085 microprocessor to control the simple traffic control system with suitable hardware arrangement
5. Draw the necessary hardware arrangements for the measurement of frequency of train of pulses and write a suitable assembly language program in 8085 microprocessor