Computer Hardware 2009 Pt Ravishankar Shukla University Question Paper

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

Time : Three Hours ] [ Maximum Marks : 50

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

UNIT-I

1. What are the essential components of a micro computer ? Draw the schematic block diagram of a micro computer showing its essential components and discuss the function of each component.

OR

Describe in detail various addressing modes of 8088 for accessing data in memory with suitable examples.

UNIT-II

2. Draw the Payout diagram of IBMPC mother board showing various parts and briefly explain function of each part.

OR

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

UNIT-III

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

OR

Describe any two ROM BIOS services in detail.

UNIT-IV

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

OR

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

UNIT-V
5. Write short notes on any two of the following :

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

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