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Important Questions in Microprocessors and Microcontrollers EC2304 EC 2304 subject for NOV/DEC 2011 ANNA UNIVERSITY EXAMINATIONS FOR III YEAR ECE Students

Important Questions in Microprocessors and Microcontrollers EC2304 EC 2304 subject for NOV/DEC 2011 ANNA UNIVERSITY EXAMINATIONS FOR III YEAR ECE Students


EC2304 - Microprocessors and Microcontrollers

UNIT I

1.      Explain the 8085 bus  structure  with a neat sketch
2.      Explain the  8086  interrupt types in detail.
3.      Briefly  explain the concept  of DMA
4.      Draw  and explain in detail about the architecture of 8086.

UNIT II
1.      Explain  the  few  assembler  directives  with  suitable examples
2.      Explain the data transfer group  and logical group of 8086 instructions
3.      Write an 8086 ALP to find the largest element in an array  elements


4.      Explain the relative addressing  mode and  string addressing  mode  with its syntax in 8086

UNIT III
1.      Write neat block diagram explain the 8255 Programmable peripheral  interface and its operating modes.
2.      Write neat block diagram explain the 8254 Programmable interval timer .Also explain the various modes of operation
3.      Write neat block diagram explain the 8279 keyboard display  controller and  its software commands
UNIT IV
1.      Explain  the architecture and working of the 8051 microcontroller.Give a neat sketch
2.      Explain the logic instructions in 8051 with an example for each
3.      Assume that  5 BCD data items are stored in RAM locations starting in 40H as shown  below. Write  an 8051 program to find the sum of all the numbers . The result must be in BCD.
40 = (71)    41=(11)    42 =(65)     43 =(59)    44 = (37)
UNIT V

1.      Draw and explain the diagram to interface a stepper motor with a 8051 microcontroller. Also  write  an  ALP to run the stepper motor in both forward and reverse direction with delay.
2.      Draw  and explain the block diagram of traffic light control system with program.
3.      Draw  and explain the block diagram of traffic light control system with program.

2 comments

only in this question ref caler the paper by Dhakshna

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I am going to write the arrear exam on 16th Nov 2013 . can i prepare these questions only , or i need to prepare more.

help me out guys , i have only Mp arrear. i am also writing and writing every sem.

any suggestions mail me at jackyhacky1991@gmail.com

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