VTU Previous Exam Papers BE CS 4th Semester Computer Organization July 2007

VTU Previous Exam Papers BE CS 4 th Semester

Computer Organization July 2007


  1. a. Explain different functional units of a computer. Mention the function of the processor registers i) PC ii) MAR iii) IR

b. What is a bus? Expiain single bus and multiple bus structure used to interconnect functional units in computer system.

c.   Explain with an illustration multitasking.

2 a. Explain how the performance of a computer can be measured. What are the measures to improve the performance of computers?

b.  Explain with illustration, the three systems of representing binary numbers which system is most often used in computers?

c.   What is overflow in integer arithmetic? Explain how overflow can be detected, with an illustration.

3 a. Explain

i)    Byte addressability ii) Big-endian assignment iii) Little endian assignment.

b.  Mention four types of operations required to be performed by instruction in a computer. What are the basic types of instruction formats? Give an example for each.

c.   What do you mean by addressing mode? Explain any four addressing modes. Give one example for each type.


4 a. Compare CISC and RISC systems.

b.   With neat block diagram, explain any two methods of handling multiple I/O devices.

c.   What is-the necessity of DMA controller? Explain the methods of bus arbitration.


5 a. What are functions of an I/O interface? Explain with a block diagram I/O interface between a keyboard and a processor.

b.   Explain serial port and a serial interface.

c.   What is USB? What are the objectives of USB? Explain USB architecture.


6 a. Mention any two differences between static and dynamic RAMs. Explain the internal organization of a memory chip consisting of 16 words of 8 bit each.

b.  Explain with block diagram and timing diagram synchronous DRAM.

c.   What is secondary storage? Explain in brief magnetic hard disk. (06 Marks)


7 a. How do you design FAST ADDERS? Explain a 4 bit carry look ahead adder.

b.  Explain the sequential binary multiplier with the use of a block diagram.

c.   Explain the computational details of multiplying two 4 bit numbers 10 11 and 0101 using Booths algorithm. Verify the result obtained.


8 a. With a block diagram expiain the general requirements of a microwave oven or a digital camera in embedded systems.

b. Explain the concept of micro programmed control unit.

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