GTU Embedded Systems - December 2014 Exam Question Paper

GTU Electronics and Communication Engineering (Semester 7)
Embedded Systems
December 2014

Total marks: --
Total time: --

INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

1 (a) (i) 'By decreasing the operating clock at a lower frequency reduces the power loss due to heat generation' Justify the statement.
(ii) Compare the features and list the applications of Digital Signal Processor and General Purpose Processor.

7 M

1 (b) Name the various types of memories used in an embedded system and explain in brief the functions assigned to them.

7 M

2 (a) List at least seven software tools used for designing an embedded system and state the significance of them.

7 M

2 (b) Explain the following ARM7 instructions with suitable example.
(i) BVC
(ii) UMLAL

7 M

2 (c) Explain the following ARM7 instructions with suitable example.
(ii) RSCMI (ii) SWINE

7 M

3 (a) Explain in detail with example how nested subroutine call (a subroutine that calls another subroutine) is handled in ARM7 processor.

7 M

3 (b) Write an assembly language program for ARM7 processor to find number of ONEs in a word (32-bit data) using subprogram FIND_ONE for FIVE words of array. Save result to another array.

7 M

3 (c) Draw the block diagram of ARM7 processor and explain it in detail.

7 M

3 (d) Write an assembly language program for ARM7TDMI processor to execute the C code statement:
i=0; y=0;
while(i < N)
{ y = y + h[i] * x[i];
i++; }

7 M

4 (a) Explain synchronous, iso-synchronous and asynchronous serial communication modes with suitable example.

7 M

4 (b) Write short note on socket functions.

7 M

4 (c) Write short note on PCI parallel device bus.

7 M

4 (d) What is semaphore? How to apply the concept of it for shared data problem? Explain in detail with an example.

7 M

5 (a) Describe the following services of the OS: (i) Process management and (ii) Device management.

7 M

5 (b) Explain in brief round robin time slicing scheduling strategy with an example.

7 M

5 (c) Explain following terms in brief. (i) Kernel (ii) TCB (iii) CPU load

7 M

5 (d) List three alternative systems for the OS to respond to hardware source call on interrupt. Explain in detail any one among them.

7 M

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