Madras University (UnOM) 2011 B.C.A Computer Application Digital Logic Fundamentals - Question Paper

APRIL 2011 51301/SAU1A

Time: three hours Max: 75 marks

part A -(10x2=20 marks)

ans any TEN ques..

All ques. carry equal marks

1. elaborate the various categories of computers?

2. What is a compiler?

3. What is the decimal equivalent of 10111.

4. Expand ASCII and EBCDIC.

5. describe Boolean Algebra.

6. Write the Associative and Distributive laws.

7. describe demultiplexer.

8. Draw the logic diagram and its truth table of half adder.

9. What is scratch pad memory?

10. List any 6 operations generated in the ALU.

11. List the 6 phases of the computer design process.

12. What is PLA?

part B -(5x5=25 marks)

ans any 5 ques..

All ques. carry equal marks

13. discuss the various kinds of computers.

14. Convert the decimal numbers to the base indicated.
(a) 175 to octal
(b) 2479 to hexadecimal
(c) 255 to binary.

15.Explain the binary logic with symbols and truth tables.

16. discuss JK Master Slave flip flop.

17. discuss the operation of clocked RS flip flop.

18. define in detail the functional units of a digital computer with a neat block diagram.

19. define the PLA control method of designing a control unit.

part C -(3x10=30 marks)

ans any 3 ques..

All ques. carry equal marks

20. explain about generation of computers.

21. explain about Gray, Excess three and fault detection codes with an example.

22. Using maps derive minimal product of sums expression for the function in 4 variables w, x, y, z: m1+m3+m5+m7+m12+m13+m8+m9.

23. discuss the operation of digital multiplexers and show how it can be used to implement any Boolean function.

24. define in detail how the arithmetic and logic unit of a computer is designed.

Earning:   Approval pending.