O/S address

OAL
(OEM Adaption Layer)

OASIS
(Organization for the Advancement of Structured Informations Standards)

OBTW
(Oh By The Way)

OCR
(Optical Character Recognition)

ODA
(Open Documents Architecture)

ODBC
(Open DataBase Connectivity)

ODI
(Open Data-link Interface)

ODP
(Open Directory Project)

OEM
(Original Equipment Manufacturer)

OFDM
(Orthogonal Frequency Division Multiplexing)

Office

Office automation

Off-line

OH
(Off Hook)

OHCI
(Open Host Compliant Interface)

OIC
(Oh I See)

OLAP
(On-Line Analytical Processing)

OLE
(Object Linking and Embedding)

OLED
(Organic Light Emitting Diodes)

OLE-DB
(OLE-DataBase)

OLR
(Off-Line Reader)

OLTP
(On-Line Transaction Processing)

OMG
(Open Management Group)

OMTP
(Over-Molded Thin Package)

On the fly

Online

On-line

OnNow

OOP
(Object-Oriented Programming)

OPC
(OpenGL Performance Characterization)

OPC
(Optimum Power Calibration)

Open HCI
(Open Host Controller Interface)

Open Type

Open VMS

OpenDVD

OpenGL
(Open Graphics Language)

OpenLDI

OPI
(Open Prepress Interface)

Opt

Opteron

Optical fiber

Optimization

Orange Book

ORB
(Object Request Broker)

OS
(Operative System)

OS/2

OS/2 Warp

Osborne

OSD
(On Screen Display)

OSF
(Open Software Foundation)

OSI
(Open System Interconnect)

OSI address

OSPF
(Open Shortest Path First)

OSR2
(OEM Service Release 2)

OTOH
(On The Other Hand)

Ottimizzazione

Outbound Link

Output

Outsorcing

Overburning

Overclock

Overdrive

Overflow

OAL

OEM Adaption Layer

Parte del sistema operativo Windows CE che lo rende adattabile all'hardware, indipendentemente dalla piattaforma.