EC2304 Microprocessors and Microcontrollers– 2012 Important Questions With Keys (1st Edition)

Anna University
Department of Electronics Communication Engineering

Department : B.E ECE
Semester : V
Year : 3rd yr
Regulation : 2008
Subject Code : EC2304

Subject Name : Microprocessors and Microcontrollers

Content : EC2304 Microprocessors and Microcontrollers – Important Questions with Keys – 1st Edition of 2012.


Part B – (16 Marks)

1. Draw & explain the architecture of 8085 microprocessor

Block Diagram Registers Available Function Of Accumulator

Explanation about all blocks in the block diagram


2. Draw the Pin Diagram of 8085 and explain the function of various signals.

Pin Diagram

Explanation about all signals


3. Explain the instruction classification & instruction sets

Data Transfer Instructions Arithmetic Instructions Logical Instructions

Branch Instructions

Machine Control Instructions


4. Write a program to sort the numbers in ascending and descending order.

Program

Result Verification


5. Draw the timing diagram of the following Instructions

PUSH

IN Port A STA 5000

MVI A, 08

Explain the machine cycles needed for every Instructions and draw the timing diagram


6. Explain the 8085 based microcomputer system


7. With neat sketch explain the functions of 8255 PPI.

Block Diagram

Explanation about all the ports available.

Explanation about the modes of transfer Explain the control Word Register


8. With neat sketch explain the functions of 8251.

Block Diagram

Types of data transfer

Explanation about all the blocks.

Explain the control Word Register, Status Register


9. With neat sketch explain the function of DMA controller.

Block Diagram

Explanation about all blocks in the block diagram


10. With neat sketch explain the function of Programmable Interrupt Controller.

Block Diagram

Explanation about all blocks in the block diagram


11. With neat sketch explain the function of Keyboard and display controller.

Block Diagram

Types of Display Available

Types of keys available

Explanation about all blocks in the block diagram


12. With neat sketch explain the function of A/D converter.

Fundamental steps

Figure

Explain the functions.




13. With neat sketch explain the function of D/A converter.

Fundamental steps

Figure

Explain the functions.


14. With neat sketch explain the architecture of 8051 microcontroller.

Block Diagram

Explanation about all blocks in the block diagram


15. Draw the Pin Diagram of 8051 and explain the function of various signals.

Pin Diagram

Explanation about all signals


16. List the various Instructions available in 8051 microcontroller.

Data Transfer Instructions Arithmetic Instructions Logical Instructions

Boolean variable Manipulation Instructions

Program and Machine Control Instructions