Anna University
Department of Electronics and Connunication Engineering
EC 2304-Microprocessor and Microcontroller Important Questions
UNIT-1
1. Explain the architecture of Intel 8086 with the help of a block diagram? (12)
2. List out the maskable and non maskable interrupts available in 8086? (6)
3. Explain the Maximum mode of operation of 8086. (12)
4. Explain the minimum mode of operation of 8086. (12)
5. Design an 8086 based system in minimum mode containing 64kb of EPROM and64kb of RAM (12)
6. Give the functions of NMI, BHE and TEST pins of 8086? (4)
UNIT-II
1. Write an assembly language program to add two 2-digits BCD Number? (4)
2. Explain the instruction set of 8086? (10)
3. Write an assembly language program to convert on array of ASCII code to corresponding binary (hex) value. The ASCII array is stored starting from 4200H. The first element of thenumber of elements in the array. (8)
4. Explain addressing modes of 8086? (10)
5. Write an ALP to Add two 8 bit numbers? (4)
6. Explain the 8086 Bit Manipulation instructions with an example for each. (6)
7. Write an 8086 program to convert BCD Data to Binary Data. (8)
Explain the Relative addressing mode and the Implied addressing mode with its syntax. Use an example. (8)
UNIT-III
1. Draw the Block diagram and explain the operations of 8251 serial communication interface. (16)
2. Draw the Block diagram of 8279 and explain the functions of each block. (16)
3. Discuss in detail about the operation of timer along with its various modes. (16)
4. Explain the 8279 keyboard and display controller with a neat sketch.
5. Describe the architecture and working of 8253 timer
UNIT –IV
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 Instruction available in 8051 microcontroller. (16)
4. Explain the instruction set of 8051. (16)
5. Write an assembly language program to find “Fibonacci Series” of “N” given term. (16)
6. Write an assembly language program for stepper motor control.
UNIT –V
1. Explain how microcontrollers and microprocessors can be used for the washing machine control application. Use sketches.
2. Explain with a neat sketch how microcontrollers and microprocessors can be used for the stepper motor control application.
3. Explain in the detail the process involved in the design of traffic light controller with example.