CBSE Class 7 Computer Science File Format Notes

Some Important Video File Formats

3GP – Third Generation Partnership Project
AVI- Microsoft Audio Visual Interleaved
DIVX- Digital Video Express Encoded Movie Files
FLV- Flash Video
MKV – Matroska Video File
MPEG- Motion Picture Experts Group file interchange format
MP4- MPEG-4 Video Stream MTS- AVCHD Video File VOB- Video Object File
WMV- Windows Media Video

Some Important Audio File Formats

MIDI- Musical Instrument Digital Interface MIDI-sequention Sound
MP3- MPEG Layer 3 Audio
WMA- Windows Media (Metafile)

Some Important Image File Formats

BMP- Microsoft Windows BITMAP
GIF- Graphics Interchange Format
JPEG, JPG- Joint Photographic Experts Groupt
PNG- Portable Network Graphics
PSD- Adobe Photoshop Document
TIF- Tagged Image File Format
AI- Adobe Illustrator File
SVG- Scalable Vector Graphics File
VSD- Microsoft Visio Document

Some Important Document File Formats

DOC- Microsoft Word Binary File Format
DOCX- Microsoft Word Open XML Document
ODT- OpenDocument Text Document
PDF- Portable Document Format
RTF- Rich Text Format
SWF- Shockwave Flash Movie
XLS- Microsoft Excel Spreadsheet
XML- Extensible Markup Language
CSV- Comma Separated Values File
ODS- OpenDocument Spreadsheet
XLSX- Microsoft Excel Open XML Spreadsheet
KEY- Keynote Presentation
PPT- Microsoft PowerPoint
PPTX- Microsoft PowerPoint 2007 XML
PPS- PowerPoint Slide Show

MISC

DAT- Data File
EXE- Executable file
TTF- TrueType Font
VCF- vCard File

Some Important File Extensions:-

Abbrivations related to computer

A
Al – Artificial intelligence
ALGOL – Algorithmic Language
ARP – Address resolution Protocol
ASCII – American Standard Code for Information Interchange

B
BINAC – Binary Automatic Computer
BCC – Blind Carbon Copy
Bin – Binary
BASIC – Beginner’s All-purpose Symbolic Instruction Code
BIOS – Basic Input Output System
Bit – Binary Digit
BSNL – Bharat Sanchar Nigam Limited

C
CC – Carbon Copy
CAD – Computer Aided Design
COBOL – Common Business Oriented Language
CD – Compact Disc
CRT – Cathode Ray Tube
CDR – Compact Disc Recordable
CDROM – Compact Disc Read Only Memory
CDRW – Compact Disc Rewritable
CDR/W – Compact Disk Read/Write

D
DBA – Data Base Administrator
DBMS – Data Base Management System
DNS – Domain Name System
DPI – Dots Per Inch
DRAM – Dynamic Random Access Memory
DVD – Digital Video Disc/Digital Versatile Disc
DVDR – DVD Recordable
DVDROM – DVD Read Only Memory
DVDRW – DVD Rewritable
DVR – Digital Video Recorder
DOS – Disk Operating System

E
EBCDIC – Extended Binary Coded Decimal Interchange Code
e-Commerce – Electronic Commerce
EDP – Electronic Data Processing
EMEePmRoOryM – Electrically Erasable Programmable Read Only
ELM/e-Mail – Electronic Mail
ENIAC – Electronic Numerical Integrator and Computer
EOF – End Of File
EPROM – Erasable Programmable Read Only Memory
EXE – Executable

F
FAX – Far Away Xerox/ facsimile
FDC – Floppy Disk Controller
FDD – Floppy Disk Drive
FORTRAN – Formula Translation
FS – File System
FTP – File Transfer Protocol

G
Gb – Gigabit
GB – Gigabyte
GIF – Graphics Interchange Format
GSM – Global System for Mobile Communication

H
HDD – Hard Disk Drive
HP – Hewlett Packard
HTML – Hyper Text Markup Language
HTTP – Hyper Text Transfer Protocol

I
IBM – International Business Machine
IM – Instant Message
IMAP – Internet Message Access Protocol
ISP – Internet Service Provider

J
JPEG – Joint Photographic Experts Group

K
Kb – Kilobit
KB – Kilobyte
KHz – Kilohertz
Kbps – Kilobit Per Second

L
LCD – Liquid Crystal Display
LED – Light Emitting Diode
LPI – Lines Per Inch
LIS – Large Scale Integration

M
Mb – Megabit
MB – Megabyte
MPEG – Moving Picture Experts Group
MMS – Multimedia Message Service
MICR – Magnetic Ink Character reader
MIPS – Million Instructions Per Second

N
NIC – Network Interface Card
NOS – Network Operating System

O
OMR – Optical Mark Reader
OOP – Object Oriented Programming
OSS – Open Source Software

P
PAN – Personal Area Network
PC – Personal Computer
PDA – Personal Digital Assistant
PDF – Portable Document Format
POS – Point Of Sale
PNG – Portable Network Graphics
PPM – Pages Per Minute
PPP – Point-to-Point Protocol
PROM – Programmable Read Only Memory
PSTN – Public Switched Telephone Network
POST – Power On Self Test
PING – Packet Internet Gopher

R
RAM – Random Access Memory
RDBMS – Relational Data Base Management System
RIP – Routing Information Protocol
RTF – Rich Text Format

S
SMTP – Simple Mail Transfer Protocol
SQL – Structured Query Language
SRAM – Static Random Access Memory
SNMP – Simple Network Management Protocol
SIM – Subscriber Identification Module

T
TCP – Transmission Control Protocol
TB – Tera Bytes

U
UPS – Uninterrupted Power Supply
URI – Uniform Resource Identifier
URL – Uniform Resource Locator
USB – Universal Serial Bus
ULSI – Ultra Large Scale Integration
UNIVAC – Universal Automatic Computer

V
VAR – Variable
VGA – Video Graphics Array
VSNL – Videsh Sanchar Nigam Limited
VDU – Visual Display Unit

W
Wi-Fi – Wireless Fidelity
WLAN – Wireless Local Area Network
WPA – Wi-Fi Protected Access
WWW – World Wide Web
WORM – Write Once Read Many

X
XHTML – eXtensible Hyper text Markup Language
XML – eXtensible Markup language

Z
ZB – Zeta Byte