DISTANCE EDUCATION
M.C.A. DEGREE EXAMINATION, MAY 2018.
First Semester
DIGITAL COMPUTER ORGANIZATION
(2010 Academic Year Onwards)
Time Three hours Maximum 100 marks
PART A — × 8 40 marks)
Answer any FIVE questions.
1. Convert the following
(1234.56)10
(1234.56)8
(1234.56)16
(110101.1101)2
2. Describe the different types of complements.
3. State various Boolean laws.
4. Describe Decoder with neat diagram.
5. Write short notes on ROM.
6. Explain the organization of magnetic disk memory.
Sub. Code
101
DE-4095
2
Sp 6
7. Draw the circuit of a shift register and explain the
operations in detail.
8. Explain any two peripheral devices.
PART B — × 15 60 marks)
Answer any FOUR questions.
9. Explain in detail about the Karnaugh's map
simplification with neat diagram.
10. Convert the following expressions to sum-of-products
form:



11. Explain Multiplexer and Demultiplexer with neat
diagram.
12. Explain the functionality of Half adder and full adder.
13. What is a counter? Design a mod-5 counter with J-K flip
flop.
14. What is interrupt? Explain in detail about interrupt
Priorities.
15. Explain the block diagram of an I/O interface unit.