VTU Previous Question Papers BE CS Seventh Semester

Embedded Computing Systems June 2012

Note: Answer FIVE full questions, selecting at least TWO questions front each part.

PART-A

1 a. Define an embedded system. Explain the components of embedded system hardware.

b.   Point out major differences between Harvard and Von Neuman architecture.

c. Explain the various software tools for designing an embedded system.

2 a. Compare the advantages and disadvantages of data transfer using serial and parallel ports/devices.

b. Describe and compare UART, Rs232C, SDI₀ devices.

3 a. What is a timer? How does a counter perform :

i)      timer functions?

ii)     prefixed time initiated event generation?

iii)    time capture fimctions?

b. Explain the following wireless and mobile system protocols :

i)  Bluetooth                     ii) Zig Bee

4 a. What do you mean by throwing an exception? How^r is the exception condition during execution of a function (routine) handled?

b. What are the uses of hardware and software assigned priorities in interrupt servicc mechanism?

PART -B

5 a. What are the different programming models? Give an example, explain the SDFG model.

b. What is a semaphore? What arc the IPC Junctions used by a software programmer? Explain them.

6 a. What is a process manager? What are its services?

b. What is RTOS? Point out and explain the various services of RTOS.

c. Explain the user and supervisory mode structure in OS.

7 a. Explain preemptive scheduling model. Point out the various scheduling models.

b. What are the important operating system security issues? List the important security function.

c.  What are the methods of optimizing memory space in RTOS?

8 a. What is a target system? How is embedded software loaded into the target system?

b.   What is a simulator? Illustrate the detailed design development process using a simulator.