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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. Explain in detail about the design considerations, simulation and Analysis Performed
during the process of embedded system design with suitable example. (16M)
2. Describe the various operating modes of timer/counters and associated
control registers of the 8051 microcontroller. (16M)
3. (a) List out the Boolean bit-level operations. (8M)
(b) Write an assembly language program to double the number in register R2
and put the result in registers R3(high byte) and R4(low byte). Also write
comment on this (8M)
4 . (a) Explain with suitable example, how to perform unconditional jumps using
relevant mnemonics. (8M)
(b) Write an assembly language program for the data given below:
If the lower nibble of any number placed in A is larger than the upper nibble, set the
C flag to 1, otherwise clear it. Place comments on each line of code. (8M)
5. Explain the concept of interfacing an LCD to the 8051 microcontroller with neat
diagram. (16M)
6. (a) Explain the uses of semaphore Flag or Mutex as Resource Key. (8M)
(b) What is meant by pipe? How does a pipe differ from a queue? . (8M)
7. With suitable embedded system example, explain how laboratory tools are
utilized for design using RTOS. (16M)
8. (a) Explain about the data transfer on the I2C Bus with suitable timing
diagrams. (10M)
(b) List out the specifications of I2C Bus Protocol.
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