N A L A N D A O P E N U N I V E R S I T Y
Master of Computer Application Part-I
PAPER-II
(Computer Organization)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any Five Questions.
All questions carry equal marks.
1. Convert the following
(11011011)2 )10
(4426)8 )16
(101001011100110)2= )16
(ABC2E)16
Explain the binary addition and subtraction with an example.
2. Draw a combinational circuit using AND, OR and NOT gate such that for every four bit even
input the output is zero.
3. Simplify the following using Karnaugh's map in terms of SOP and draw the circuit for the
output expression: F 10, 12, 15)
4. Discus NAND, NOR and XOR gates with their truth tables and circuit diagrams. Why NAND and
NOR gate called universal gate?
5. Differentiate between sequential circuits and combinational circuits. Give examples of these
circuits with their circuit diagram.
6. Design an 8x1 multiplexer. Give its circuit diagram and its truth table. Discuss application of
multiplexer.
7. What is memory in computers? Discuss different types of memories used in Computers.
8. Describe the basic structure of a CPU. Explain different types of general registers in a found in
processors.
9. Write an assembly language program to add two numbers and display their results.
10. Write short notes on the following
Micro operations
Control unit
ALU
Segment registers