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
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