Tamil Nadu Open University (TNOU) 2009-1st Sem M.C.A - - Digital Logic and computer organization -- III - Question Paper
M.C.A. DEGREE EXAMINATION, 2009
( 1st SEMESTER )
( PAPER - III )
131. DIGITAL LOGIC AND COMPUTER
ORGANIZATION
( New Regulations )
December ] [ Time : three Hours
Maximum : 100 Marks
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69 13 M.C.A. DEGREE EXAMINATION, 2009
(FIRST SEMESTER)
( PAPER - III)
131. DIGITAL LOGIC AND COMPUTER ORGANIZATION
( New Regulations )
December ] [ Time : 3 Hours
Maximum : 100 Marks
PART - A (8 x5 = 40)
Answer any EIGHT questions.
All questions carry equal marks.
1. Convert the following binary numbers to equivalent decimal numbers :
(a) 100100.
(b) 10011.
2. Briefly explain basic gates.
3. Write short notes on the basic structure of a computer.
4. What do you mean by static memory ? Explain.
5. State and explain the operations of main memory.
6. Write short notes on subroutines.
7. Explain how a processor can execute a complete instruction.
8. Briefly explain hardwired control.
9. Discuss the major functions of I/O module.
10. Write short notes on program controlled I/O.
PART - B (3 x20 = 60)
Answer any THREE questions.
All questions carry equal marks.
11. Convert the following to product of sums form:
(a) AB + A (B+C) (D + B).
(b) ( B + C) [ ( "b +"C ) (A+ C) ( B + C )] .
12. Explain the functions of functional units of a computer with a neat figure.
13. Describe in detail the most common addressing techniques.
14. Explain the functions of a microprogrammed control unit with a neat figure.
15. Write notes on :
(a) Interrupts.
(b) i,. = t Memory Access.
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