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PACS

Picture Archiving and Communication System is an electronic method and format for archiving all types of medical patient case images for long-term storage and rapid retrieval.

PAL

Phase Alternating Lines – the European accepted standard for television broadcasting

Password attacks

Any attack designed to allow an unauthorized users access to an authorized password

PCI

Peripheral Component Interconnect

PCM

Pulse Code Modulation, the method of converting an analog signal into a digital bit stream
PDF The Portable Document Format (PDF) is the file format created by Adobe Systems in 1993 for document exchange. PDF is a fixed-layout format used for representing two-dimensional documents in a manner independent of the application software, hardware, and operating system.

PDQ

Pretty Darn Quick

PDU

Protocol Data Unit

PGP

Pretty Good Privacy – A cryptography software algorithm written in the 1990s. When two hosts connect via the Internet—they also agree on a complex number (or key) that is plugged into a scrambling algorithm equation. That becomes the 'new' algorithm they will use to encrypt their messages for the extent of their communication. (AKA Blowfish)

Phishing

Any form of social engineering or software attack that tries to fool users into giving up sensitive or private information by appearing to be a legitimate enterprise often for the purpose of identity theft

Pixel In digital imaging, a pixel (picture element) is the smallest piece of information in an image.

Plenum

Cable or wire with insulated conductors often jacketed with polyvinylidine diflouride (PVDF) material to give them low flame spread and low smokeproducing properties
PNG Portable Network Graphics – a bitmap image format that employs lossless data compression (typically uses the "png" file-extension)

PnP

Plug and Play – a technology that lets operating systems automatically detect and configure most of the adaptors and peripherals internal and external to the PC.

Port scanning

An attack which scans computers ports, a place where information goes into and out of a computer, and effectively identifies open doors to a computer that attackers use
Post Used as a noun and verb. A post is a message that is published in a string of messages in a listserve or blog. To post or posting is the action of putting that message online.

POTS

Plain Old Telephone System
PPI Pixels per Inch refers to the resolution of the iamge as seen on the screen or monitor. Digital cameras create images at a fixed number of pisels. A digital camera with an image resolution of 1200 x 1600 pixels will provide a "photo-quality" printed image at 4: x 5: but a lower quality print for an 8" x 10".

PPP

Point to Point Protocol

PRI

Primary Rate Interface – an ISDN scheme to bring up to ~1.5Mbps to the user

Proxy Server

An organization's single point of entry to the internet. It typically provides NAT.

PS

Publication Standards


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