Pandit Ravishankar Shukla University 2009 B.Sc Computer Science Pandit ravishankar university's of (Hardware) - Question Paper

B. Sc. (Part III) EXAMINATION, 2009
COMPUTER SCIENCE
Paper First
(Computer Hardware- Part C)

Time : 3 Hours ] [ Maximum Marks : 50

Note : Attempt all ques.. All ques. carry equal marks.

UNIT-I

1. elaborate the essential components of a micro computer ? Draw the schematic block diagram of a micro computer showing its essential components and explain the function of every component.

OR

define in detail different addressing modes of 8088 for accessing data in memory with suitable examples.

UNIT-II

2. Draw the Payout diagram of IBMPC mother board showing different parts and briefly discuss function of every part.

OR

define how a video adapter such as VCA displays 256 colours from a palette of 256 K colours ?
define video control through ANSI-SYS and ROM BIOS.

UNIT-III

3. elaborate the important components of DOS ? How DOS is loaded ? discuss the structure of .EXE and .COM programs. discuss the procedure to generate .COM and .EXE files from .ASM files.

OR

define any 2 ROM BIOS services in detail.

UNIT-IV

4. define in detail the subsequent memory management functions :
(i) INT 21 H Function 48 H
(ii) INT 21 H Function 49 H
(iii) INT 21 H Function four AH

OR

define the file organisation in DOS. explain (i) FAT (ii) Bootstrap routine (iii) Boot sector.

UNIT-V
5. Write short notes on any 2 of the subsequent :

(i) Interrupt service routines in DOS
(ii) Filters supplied with DOS
(iii)Set up installation of Window OS
(iv) Networking features of Window OS

Earning:   Approval pending.