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Posted Date: 01 Jul 2009 Posted By: Sunil Reddy Member Level: Platinum
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2009 Jawaharlal Nehru Technological University Electrical and Electronics Engineering IV B.Tech II Semester Regular Examinations, April/May 2009 JNTU Kakinada, EMBEDDED SYSTEMS Question paper
Code No: 2420203
IV B. Tech II Semester Regular Examinations, April/May 2009
EMBEDDED SYSTEMS
( Electrical & Electronics Engineering)
Time: 3 Hours Max. Marks 80
Answer any FIVE questions
All questions carry equal marks
********
1. (a) Explain about embedded processor for a complex system. (8M)
(b) Explain the importance of the following processors in embedded Systems.
(i) Digital signal processor (ii) ASSP (8M)
2. (a) Explain the following, relevant to serial data input/output in 8051
Microcontroller.
(i) Serial data interrupts. (ii) Data Transmission and Reception. (8M)
(b) Briefly discuss about serial data transmission modes performed in 8051
Microcontroller. (8M)
3. (a) Explain the bit-level logical operations with suitable examples. (8M)
(b) Write an assembly language program to OR the contents of port 1 and 2 and put
the result in external RAM location 0100h. Also write comment on this. (8M)
4. (a) Explain the following terms relevant to calls and subroutines:
(i) Subroutines (ii) Calls and the stack (iii) Calls and returns (8M)
(b) Write a simple subroutine, call it, and jump back to the calling program
after adjusting the stack pointer. (8M)
5. (a) Define analog and digital ground. (6M)
(b) Draw the pin diagram for ADC804 chip and briefly explain how it will act as
analog to digital converter. (10M)
6. (a)Write short notes on Message Queues. (8M)
(b) Explain how Message Queues are used for communication among processes.(8M)
7. (a) What are the various Embedded Software Development Tools available for testing
Host and Target machines? (8M)
(b) Explain the procedure for getting Embedded software into the target System. (8M)
8. (a) Explain the design approach of an Elevator Controller. (8M)
(b) Write notes on Internet-Enabled Systems.
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