MICRO CONTROLLERS AND APPLICATIONS JNTU previous years question papers
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
1. Explain the details of different kinds of memories given in 8051 microcontroller.[16]
2. Give any four examples for program control flow instruction and explain. [4×4]
3. How do you provide the mechanism so that a
polled interrupt controller can receive two simultaneous interrupts in a
system? [16]
4. Describe with examples various modes of the 8051 timers. [16]
5. (a) Write an algorithm for sending ASCII codes
in a FIFO repeatedly upto maximum 32 times when a key is pressed for a
duration more than 200ms. Key is repeatdly passed every 200ms. Write
8051 assembly routine also
(b) Draw an interface for 3 scan lines and 5 return lines in a keypad. [8+8]
(b) Draw an interface for 3 scan lines and 5 return lines in a keypad. [8+8]
6. (a) Explain the importance of semaphores in multitasking system where task synchronization is achieved by this?
(b) What are the various mutex management function calls in RTOS [8+8]
(b) What are the various mutex management function calls in RTOS [8+8]
7. (a) Explain IOCO and IOSO register for timer 1 in 80196
(b) what are the interrupt sources for synchronous serial transmission and reception in 80196? What are the identification flags and local enable bits for these sources? [8+8]
(b) what are the interrupt sources for synchronous serial transmission and reception in 80196? What are the identification flags and local enable bits for these sources? [8+8]
8. (a) Explain different data processing instructions in ARM 7 (with examples).
(b) What is Barrel shifter? How does it increase the speed of execution in ARM processor
(b) What is Barrel shifter? How does it increase the speed of execution in ARM processor
0 comments :
Post a Comment