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Jargon Buster

NAT
Network Address Translators

NCOS
Network Computer Operating System

N-ISDN
Narrowband ISDN

NLQ
Near Letter Quality

NT
New Technology

NYM
Anonymous

N

Operating system
The operating system is Windows or Linux, which bridge the gap between the computer hardware and application software that the computer user uses.

Optical storage
Drives that use lasers to store and read data like CD-ROMs.

Optical drive
A device that uses lasers to read and write data.

OBJ
Object (file name extension)

OCR
Optical Character Recognition

OV
Overflow

OS
Operating system

O

POST
Power on self-test is a procedure the computer goes through when it is first turned on, to verify that the very basic components like Ram are working.

Platter
A rigid metal disk, on which data is stored in a hard drive, can be made out of glass.

Pit
A distorted area on the surface of an optical disk. Pits scatter light from the laser beam.

PB
Petabyte (1,024 terabytes) (One Million Billion characters of information)

PC-DOS
Personal Computer - Disk Operating System

PCI
Peripheral Component Interconnect/Interface

PIXEL
Picture Element

PJPEG
Progressive JPEG

POP
Post Office Protocol

POP3
Post Office Protocol, Version 3

POWER
Performance Optimisation with Enhanced RISC

PP
Parallel Port

PS/2
Programming System 2

PSU
Power Supply Unit

PW
Password

PDA
Personal Digital Assistant. A small handheld computer


P

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