Anna University, Chennai Nov/Dec 2012 Examinations
Rejinpaul.com Important Questions
EC2304/Microprocessors & Microcontrollers
V Sem ECE
Unit I-V
1.    Explain the 8085 the generation of dedicated address and data bus signals from multiplexed address/data bus
2.    Explain the 8086 interrupt types in detail
3.    Explain the internal hardware architecture of 8086 microprocessor with neat diagram
4.    Briefly explain the concept of DMA
5.    Explain the relative addressing mode and string addressing mode with its syntax in 8086
6.    Explain the data transfer group and logical group of 8086 instructions
7.     Explain the few assembler directives with suitable examples
8.    What are the instruction set of 8086 ? Explain each briefly
9.    Write neat block diagram explain the 8279 keyboard display controller and  its software   commands
10.Explain the interfacing of any 8 bit A/D converter with a 8086 microprocessor. Also write a necessary assembly language program for conversion
11.Write neat block diagram explain the 8255 Programmable peripheral interface and its operating modes
12.Explain the memory organization of 8051 microcontrollerÂ
13.Explain the program control transfer instructions in 8051
14.Explain the serial port operation  of 8051 microcontroller
15.Explain the timer operation of  8051
16.Draw and explain the  washing machine control with  8051 microcontroller. And also write  an ALP for control
17.Draw and explain the block diagram of traffic light control system with program
18.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
19.Draw and explain the  washing machine control with  8051 microcontroller. And also write  an ALP for control
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