R05410405 Micro Controllers And Applications B.Tech Question Paper : djriet.edu.in
Name of the College : Dasari Jhansi Rani Institute Of Engineering And Technology
University : JNTUK
Department : Electronics & Communication Engineering
Subject Code/Name : R05410405 – Micro Controllers And Applications
Year : 2008
Degree : B.Tech
Year/Sem : IV/I
Website : djriet.edu.in
Document Type : Model Question Paper
Download Micro Controllers And Applications Model Question Paper : https://www.pdfquestion.in/uploads/djriet.edu.in/3005-R05410405-MICRO-CONTROLLERS-AND-APPLICATIONS.pdf
DJRIET Micro Controllers & Applications Question Paper
IV B.Tech I Semester Regular Examinations, November 2008 :
MICRO CONTROLLERS AND APPLICATIONS :
( Common to Electronics & Communication Engineering, Bio-Medical Engineering and Electronics & Telematics)
Time: 3 hours
Max Marks: 80
Related : Noorul Islam College of Engineering RR220205 Electro Mechanics-II B.Tech Question Paper : www.pdfquestion.in/3033.html
Set No. 1
Answer any FIVE Questions :
All Questions carry equal marks :
1. Draw the pin diagram of 8051 and explain the functioning of each and every pin. [16]
2. Explain in detail the function of CPU registers. [16]
3. (a) List out the interrupt system specifications.
(b) Write a brief about multiple interrupt marking. [6+10]
4. (a) How do you set the TH&TL values for TIMER 0 in mode 0 operation?
(b) How do you set the registers TH&TL when changing the frequency of operation? [8+8]
5. Use an 8-bit D/A converter which generaters 1000Hz sine wave. 166 decimal samples are stoled in a look up table and fed to the converter at a rate of one sample per 6 µ sec. The look uptable is pointed by DPTR and R1 is used to count the samples. Write assembly language program to initialize the D/A converter which is interfaced to 8051. [16]
6. (a) Explain Round robin pre emptive multi-tasking algorithm.
(b) Explain Interrrupt latency, interrupt response time and interrupt recovery time in real time operating system [8+8]
7. (a) What is a page address for a direct address of a register in 80196? What is the page address for a direct address of an internal memory? Can this address predefied?
(b) Assume crystal frequency=12MHz Implement a time delay loop for the generation of 50ms delay using the instructions of 80196. Do not use timer of microcontroller. [8+8]
8. (a) How can we change the PSR contents through instructions in ARM? Explain different PSR instructions in ARM.
(b) Explain how a constant is loaded into a general purpose register of ARM processor.
(c) What is Thumb state? [6+6+4]
Set No. 2
1. Draw the block diagram of microcontroller and explain each block in detail. [16]
2. (a) Explain the working of 8051 oscillator and clock.
(b) Explain the use of SFRS. [8+8]
3. Discuss the hardware and software attributes of vectored interrupts. [16]
4. Discus elaborately how does a high speed input unit works, with relevant diagram. [16]
5. (a) If a peumatic actuator is to be driven by a microcontroller, what kind of interface is needed?
(b) What are the limitations in pulse counting in micro controller? How to count pulses appearing at a very high rate using microcontrollers? [8+8]
6. (a) What is deadlock? How to avoid them?
(b) What is the different between mailboxes and message queces?
(c) what do yout understand from priprity inversion problem in scheduling algorithm. [4+6+6]
7. (a) Why should the input to timer 2 from an external event be slower than 4µs? Assume a 12 MHZ crystal is available with 80196.
(b) What is a high speed input (HSI) interupt? Why do we call it high speed? [10+6]
8. (a) Explain the complete ARM register set in different modes of ARM processor.
(b) Explain how the change of modes take place in ARM? [8+8]