COA previous year question paper 2019 | HNBGU MCA First semester

COA : Computer Organization and Architecture

HNBGU MCA Previous Question Paper 2019

1. 1. Briefly distinguish between textual data. pictorial data, audio and video data. Also explain the importance of ASCII code.

   2. Explain the procedure to multiply two N bit numbers using booth algorithm.

2. Simplify the following Boolean function in sum of products forms by means of a four variable map :

   F(A,B,C,D) = E(0,2,8,9,10,11,14,15)
   Draw the logic diagram with :
   (a) AND - OR gates
   (b) NAND gates
   

3. 1. What is a flip - flop? Explain the operation of RS and JK flip-flops.

   2. Explain the characteristics of Multiprocessors, Encoders and Decoders.

4. 1. What is shift register? Discuss the different types of shift registers and explain the general capabilities of shift registers.

   2. What are the different addressing modes used for executing the instructions? Explain.

5. 1. What is an Interrupt? Explain about different types of Interrupt.

   2. With a neat diagram, describe DMA transfer in a computer system.

6. 1. Briefly explain various peripheral devices used in computer system.

   2. What is asynchoronous data transfer? Explain different methods used for asynchoronous data transfer.

7. Write short notes on the following:

   1. Gray code and XS -3 code
   2. Processor Organization
   3. Instruction cycle
   4. Memory hierarchy