BHARATH INSTITUTE OF SCIENCE AND TECHNOLOGYBHARATH UNIVERSITY, CHENNAI-73.

DEPARTMENT OF EEE

QUESTION BANK

Year/sem: III / VI

Subject Code: BEC602

Subject Name: MICROPROCESSOR AND ITS APPLICATIONS

UNIT-1

PART-A

1. What is Microprocessor? Give the power supply & clock frequency of 8085.

2. List few applications of microprocessor-based system.

3. What are the functions of an accumulator?

4. What is Stack Pointer?

5. What is Program counter?

6. List the four instructions which control the interrupt structure of the 8085.

7. What is meant by interrupt?

8. Differentiate between microprocessor and microcontroller?

9. What are the functions of an accumulator?

10. List the 16 – bit registers of 8085 microprocessor.

PART-B

1. With neat diagram explain the architecture of 8085 microprocessor

2. Write in detail about the addressing modes of 8085?

3. Explain the 8085 interrupt system in detail.

4. Explain the classification of the instruction set of 8085 microprocessor with suitable examples.

5. a)Explain features of 8085 microprocessor and its limitations?

b) Explain in detail about the registers used in 8085 processor?

UNIT-II

PART-A

1. Define instruction pipelining?

2. What are the flags in 8086?

3. What are the various interrupts in 8086?

4. What is meant by Maskable interrupts?

5. Discuss the function of instruction queue in 8086?

6. What is the maximum memory size that can be addressed by 8086?

7. List the various addressing modes present in 8086?

8. Draw the Flag register format of 8086?

9. Write a time delay program using 16-bit register.

10. Give the register classification of 8086.

PART-B

1. Draw and explain the internal architecture of 8086 microprocessor?

2. Classify the addressing modes of 8086 in detail

3. Explain the interrupt structure of an 8086 microprocessor with 8086 interrupt pointer table.

4. Explain the classification of the instruction set of 8086 microprocessor with suitable examples

5. Draw and explain the internal architecture of Motorola 68000 microprocessor?

UNIT-III

PART-A

1. Define a microcontroller?

2. List the features of 8051 microcontroller?

3. Name the special functions registers available in 8051?

4. What are the advantages of microcontroller based system design?

5. Difference between Microprocessor and microcontroller?

6. Explain the function of the SP pin of 8051?

7. What Is The Use Of Timing And Control Unit?

8. List the addressing modes supported by 8051?

9. Give the five sources of interrupts of 8051?

10. What is PSW?

PART-B

1. Classify the addressing modes of 8051 in detail?

2. Explain the features of 8051 microcontroller and compare it with 8096 microprocessor?

3. Describe the architecture of 8051 with neat diagram?

4. Explain the functional pin diagram of 8051 Microcontroller?

5. Discuss in detail about the timers in 8051?

UNIT IVPart - A

1. What is meant by memory mapping?

2. Compare static RAM and DRAM?

3. Write the different types of ADC?

4. What is resolution time in ADC?

5. Compare memory mapping and IO mapping?

6. Define interfacing?

7. What is meant by handshaking signal or strobe signals?

8. What is synchronous data transfer scheme?

9. What is the disadvantage in7-segment LED interfacing using ports?

10. What is settling time in DAC?

PART –B

1. Define and explain the performance parameters of sample and hold circuits? Explain its

advantages?

2. Draw and explain the interfacing of ADC with 8085?

3. Draw and explain the features and functional block diagram of interfacing of DAC?

4. Explain the 7-segment LED multiplexed display using port with neat diagram?

5. Write a suitable program for the multiplication of two 8-bit numbers in 8085 assembly

language with algorithm?

UNIT-V

PART-A

1. What is USART?

2. What are the signals available for serial communication?

3. Write the features of 8255A.

4. What is baud rate?

5. Write the different types of operating modes in 8255?

6. What are output modes used in 8279?

7. What is key debounce?

8. Write the features of RS-232.

9. Give any four operating modes of 8259?

10. What are applications of sample and hold circuits?

PART-B

1. Explain the features and block diagram of 8255 programmable peripheral interface with neat

diagram?

2. Explain the functional block diagram of 8256 direct memory access controller?

3. Explain the input modes provided by 8279 keyboard and display controller?

4. Draw the block diagram and explain the operation of 8251 serial communication interface?

5. Explain the functional block diagram of 8259 interrupt controller?