O

O/R         Originator / Recipient

OC3         155 Mbit/s

OCR         Optical Character Recognition

OCX         OLE Control Extension

ODA         Open Document Architecture

ODSI        Open Directory Service Interfaces

OEM         Original Equipment Manufacturer

OI          Object Interface

OLE         Object Linking and Embedding

OLTEP       On-Line Test Executive Program

OLTP        On-Line Transaction Processing

OMG         Object Management Group

OMR         Optical Mark Recognition

OO          Objektorientierung

OOA         Objektorientierte Analyse

OODBMS      Object Oriented DBMS

OOP         Objektorientierte Programmierung

OOPL        Object Oriented Programming Language

OOPS        Object Oriented Programming System

OP          Operator Panel

OPI         Open Prepress Interface

ORB         Object Request Broker

OS          Operating System

OS/2        Operating System/2

OSA         Office Systems Architecture

OSA         Open System Architecture

OSF         Open Software Foundation

OSI         Open Systems Interconnection

OSI/RM      OSI Reference Model

OSNS        Open Systems Network Support

OSPF        Open Shortest Path First

OSTC        Open System Testing Consortium

OTPROM      One Time Programable ROM

OWL         Object Windows Library