Password
A piece of secret authentication data used to gain secure access to resources
PDA (Personal Digital Assistant)
A small handheld computer
PDF (Portable Document Format)
A file format created by Adobe, it is good for document exchange between users. The Adobe Reader application is required to open the documents
Perl
A dynamic programming language borrowing many features from other languages including C and shell
Photosho
Graphics editing suite made by Adobe, the commercial leader for image manipulation
Pixel
The smallest component of an image
Plug-in
A small add-in that interacts with a host application to provide extra functionality; Adobe Flash for your web browser is a plug-in
Protocol
A set of guidelines that govern communications between hosts over a network such as the internet
Proxy Server
A computer system which fetches web sites for clients on request and caches the results in its memory for future requests; a proxy can also filter out certain content if it is deemed inappropriate or a security breach
