Shanmugha Arts Science Technology and Research Academy (SASTRA) University 2007 M.C.A COMPUTER ORGANIZATION & ARCHITECTURE - Question Paper

SHANMUGHA ARTS, SCIENCE, TECHNOLOGY & RESEARCH ACADEMY
SASTRA UNIVERSITY
SCHOOL OF COMPUTING
DEPARTMENT OF COMPUTER APPLICATIONS

SEMESTER : I Duration: three Hours.
SUB.CODE : MMCA103 Max. mark : 100
SUBJECT NAME: COMPUTER ORGANIZATION & ARCHITECTURE

MODEL ques. PAPER SET II


Part – A
ans all the questions 10 x four = 40
1. Perform the subsequent using 2’s complement.
111101 – 100100
obtain the octal equivalent of the decimal 14.55
2. Discuss on data representation in Digital computer.
3. Explain Interrupt
4. Briefly discuss the Memory Address Mapping.
5. Write short notes on the implementation of LIFO.
6. RPN – discuss.
7. List and discuss different kinds of Printers.
8. Briefly discuss the working principles of Magnetic tape.
9. Explain how the data transfer is implemented in Programmed I/O.
10. Explain the internal view of an I/O interface Unit.

Part – B
ans all the questions 5 x 12 = 60

11. Explain how the digital computer is organized? elaborate all the architectural problems in the basic functional units?
(OR)
12. i) Convert (101011) two to Decimal and Hexadecimal. (4)
ii) 5230 – 1321 perform subtraction using 2’s complement. (6)
iii) (7FDA)16 = (?)10
13. Discuss in detail the different Addressing Modes with Numerical examples.
(OR)
14. Convert the subsequent arithmetic expression from infix to RPN.
a) A*B + C*D + E*F (4)
b) A*B + A* (B*D + C*E) (4)
c) A+B * [C*D + E * (F+G)] (4)

15. What is Auxiliary Memory? discuss any 2 auxiliary memory devices.
(OR)
16. Consider a computer with a main memory of 32K words and available Auxiliary memory is 1024K words. Construct a memory table for mapping a virtual address with neat diagram.
17. i) discuss Flynn’s classification of computer. (4)
ii) explain Pipeline concept with example. (8)
(OR)
18. Explain DMA controller with a neat block diagram (7)
Write the operational scenario of DMA controller for the subsequent
States: DMA choose = True, RD=1, WR=0 and BG=0 (5)
19. Explain in detail the Direct Memory Access Data transfer
(OR)
20. Consider a computer system, in which the CPU sending an instruction to IOP. IOP transfers status word to Memory Location. Write in detail the communication flow ranging from CPU and IOP.

Earning:   Approval pending.