Microprocessors and Microcontrollers Anna university Important Questions 2 marks and 16 marks questions | Repeated Questions in Anna University Question Papers from all 5 units ...

Microprocessors and Microcontrollers Anna university Important Questions 2 marks and 16 marks questions | Repeated  Questions in Anna University Question Papers from all 5 units ... 



Posted by R.Anirudhan 


**we will update the important questions and topics soon ..here we have listed the repeated questions asked in AU question Papers**



 UNIT I
8085 MICROPROCESSOR
PART – A (2 Marks)
1. What are EI & DI instructions of 8085?
2. What is ALE?
3. Define stack.
4. What do you mean by input port & output port?
5. List the flags of 8085.
PART – B (16 Marks)

1. Draw & explain the architecture of 8085 microprocessor    (16)
 2. Draw the Pin Diagram of 8085 and explain the function of various signals (16)
 3. Explain the instruction classification & instruction sets    (16)
 4. Write a program to sort the numbers in ascending and descending order. (16)
 5. Draw the timing diagram of the following Instructions    (16)

UNIT II
PERIPHERALS INTERFACING OF 8085
PART – A (2 Marks)
1. What are the types of serial data communication?
2. What is baud rate?
3. What is USART? 
4. List the Software and Hardware interrupts of 8085?
5. What are the features of 8279?
6. List some of the features of INTEL 8259 (Programmable Interrupt Controller)
7. What are the control words of 8251A and what are its functions?

PART – B (16 Marks)

1. With neat sketch explain the functions of 8255 PPI.    (16)
2. With neat sketch explain the functions of 8251.     (16)
 3. With neat sketch explain the function of DMA controller.   (16)
 4. With neat sketch explain the function of Programmable Interrupt Controller. (16)
 5. With neat sketch explain the function of Keyboard and display controller. (16)
 6. With neat sketch explain the function of A/D converter.    (16)
7 With neat sketch explain the function of D/A converter.    (16)

UNIT III
8086 MICROPROCESSOR
PART – A (2 Marks)
1. What is addressing?
2. What are the modes in which 8086 can operate?
3. List the segment registers of 8086.
4. What are the Index registers of 8086?
5. What is NMI?
6. What are the flags of 8086?
PART – B (16 Marks)
1. Draw the architectural block diagram of 8086.                                                         (16)
 2. Explain with examples addressing modes of 8086 processor.                                    (16)
3. Draw & explain the modes of operation of 8086.                 (16)
4. Explain the instruction set of 8086 with examples.                                           (16)

UNIT IV
8051 MICRO CONTROLLER
PART – A (2 Marks)
1. What is a Microcontroller?
2. What is the difference between microprocessor & microcontroller?
3. List the addressing modes of 8051.
4. Explain the instructions used to access external RAM.
5. List the features of 8051 microcontroller.
6. Explain the interrupts of 8051 microcontroller
PART – B (16 Marks)
 1.With neat sketch explain the architecture of 8051 microcontroller.  (16)
 2. Draw the Pin Diagram of 8051 and explain the function of various signals. (16)
 3. List the various Instructions available in 8051 microcontroller.   (16)
 4. Explain the memory structure of 8051       (16)
5. Explain the I/O port structure of 8051.       (16)
6. Draw the pin configuration of 8051, explain each pin.    (16)

UNIT V
8051 PROGRAMMING AND APPLICATIONS

PART – A (2 Marks)
1. What is the function of program counter in 8051?
2. Write about the jump statement?
3. Write about CALL statement in 8051.
4. Explain the operating mode0 of 8051 serial ports
5. Explain the operating mode2 of 8051 serial ports.
6. Explain the mode3 of 8051 serial ports.
PART – B (16 Marks)
1. Explain the instruction set of 8051.                     (16)
2. Draw the format of SCON register. Explain different bits in it.                                    (16)
3. Write an assembly language program to find “Fibonacci Series” of “N” given term.  (16)
4. Write an assembly language program for stepper motor control.                                  (16)
5. Explain the interfacing concept  of keyboard  with 8051.                                             (16)
6. Explain the interfacing concept of ADC &  DAC  with controller.                              (16)




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