Nalanda Open University
Annual Examination 2017
Bachelor in Computer Application Part-II
Paper-XI (Introduction to Computer Organization)
Time: 3.00 Hrs. Full Marks: 80
Answer any five questions. All questions carry equal marks.
1. Convert the following:
(1110011)2 to its
(764)8 to Decimal number.
553 to its Binary equivalent.
(1100110)2 to Hexadecimal number
2. Simplify the following Boolean function using Sum-of-Product form, by Karnaugh's map:
Σ 11, 12, 15). Also draw the circuit diagram for it.
3. Define and draw the fundamental gates with their truth tables. What are universal gates?
Explain giving an example.
4. Write a program in 8086 assembly language to generate the first 10 terms of the primary
number. Also draw an appropriate flow chart for your program.
5. What is the difference between combinational circuit and sequential circuit? Give example
for each type of circuit.
6. Draw a circuit of half adder and full adder and give their truth tables. Define don't care
condition.
7. What are Interrupts? Discuss their various types. Describe the execution of Instruction Cycle
with Interrupt Cycle with the help of a diagram..
8. What is a Control Unit? Depict the structure of a Microprogrammed Control Unit with the
help of a diagram and explain its working.
9. Explain the following addressing modes in the context of 8086 microprocessor with the help
of examples: Register Addressing immediate addressing Indexed Indirect
Addressing
10. Explain any three of the following with the help of suitable diagrams:
DMA
R-S flip-flop
RAID
DRAM