What is FULL FORM of : CAPTCHA,GIF,PNG,SIM,PDF...,Computer Literacy for begginers

In our Daiy life we use many computer applications  and use many types of  softwares where we get to know about many ABBREVATIONS or short cuts like GIF,PNG,PDF... we use all them but we dont know there full forms.

here are few of such words with their expanded form , just have a look...


CAPTCHA : "Completely Automated Public Turing test tell Computers and Humans Apart"
GIF : Graphical Interface File Format
PDF : Printable Document Format
PNG : Portable Network Graphics
DLL :Dynamic Link Libraries
BIOS : Basic Input & output System
JPEG : Joint Photographic Expert Group
IDE :   Integrated Development Environment / Integrated Device  Electronics
PHP : Hypertext Preprocessor
RAID : Redundant Array of Inexpensive Disks
URL : Uniform Resource Locator
MIPS :Million Instructions per Second
VGA : Video Graphic Adaptor
GPS : Global Positioning System
DNS :Domain Naming System
HDMI : High-Definition Multimedia Interface
SIM : Subscriber Identity Module
LED : Light emitting diode
PPI : Pixel Per Inch
GPRS:General Packet Radio Service
SOAP : Simple Object Access Protocol
WMV : Window Media Video
XML : eXtensible Markup Language
ANSI : American National Standards Institute
MODEM : Modulator And Demodulator