Object-Orientated  Programming method where data and functions are classed as
                   objects. Makes programming much easier to understand, write and
                   modify.
								 
OCR                Optical Character Recognition. Technology  used to scan text
                   into a document from paper.
					
OCS                Original ChipSet used on Amiga 1000, 500 and 2000 models.
				 
Octal              Numbering system based on 8 digits (0-7).


ODBC               Open DataBase Connectivity. Uses Special data source settings to 
                   allow applications to connect to various data sources such as 
                   Access, Excel, SQL database.

OEM                Original Equipment Manufacturer. Goods supplied direct from the
                   manufacturer of the device or software. OEM software is the same
                   as Retail but tend to be Full installs rather than Upgrade installs
                   and bundled with the hardware.
									 
OHCI               Open Host Controller Interface for USB ports (see UHCI).

OLPC               One Laptop Per Child project to provide low cost laptops to children
                   in developing countries.

OpenGL             Open Graphics Language. Standard widely available to program
                   3D graphics. Developed by Silicon Graphics Inc. See website.

Opera              Another popular web browser.

Opteron            AMD's high end processor which supports 32 and 64 bit processing.

OS                 Operating System.Special program used to control the hardware 
                   and run application software on computers. Can be supplied on
                   ROM or on disk.

OS/2               IBM's graphical operating system for the PC. Fully 32 bit unlike
                   Windows 3.1 at the time. 

Overburning        Writing more data to a CD-R disc than its rated capacity. CD-R can
                   hold 74 or 80 mins of data but there is sometimes extra capacity on
                   each disk but varies from manfucturer to manufacturer. Over burning
                   is not recommended as it can lead to lose of data and possibly 
                   damaging the CDR device.