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Computing terms explained in plain English

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  1. OCR

    Optical character recognition. The process by which printed text is scanned and converted into documents that can be edited.

  2. ODF plug-in

    ODF is the Open Office file format. This plug-in lets Word read Open Office documents.

  3. ODS

    File format for Open Office Calc documents. ODS files can be read by Microsoft's Excel program.

  4. OEM

    Original Equipment Manufacturer. Refers to components or software installed by the manufacturer.

  5. Office suite

    A bundle of useful programs sold in one package. Lotus Smartsuite, Microsoft Office and Roxio Creator are prime examples.

  6. Offline

    Working with internet software, such as an email program, without being connected to the internet.

  7. Ogg Vorbis

    A free alternative to the MP3 standard for compressing digital audio.

  8. Oled

    Organic light-emitting diode. A thin-film organic light-emitting diode used in computer displays and television screens.

  9. Onboard

    Already fitted to your PC as part of the main circuitry on the motherboard. So 'onboard AGP graphics' would mean the PC has built-in AGP graphics facilities. The alternative is a separate expansion card attached to the motherboard via a special socket.

  10. Onboard graphics

    Computers that don't have a separate graphics card are said to have onboard graphics, where a part of the motherboard handles the graphics processing.

  11. Online

    Being connected to the internet.

  12. Online gaming

    Many games allow multiple players to compete or co-operate with each other over the internet.

  13. Online instructions

    A read-me text file that will be installed on your computer during the installation of software, or will be present on the CD-Rom for future reference. Think of it as an electronic manual.

  14. Online service

    A company that provides its own online content that is accessible only to fee-paying members, as well as access to the internet proper. AOL is an online service.

  15. OpenGL

    A programming standard used for work such as 3D modelling. Setting a game to use OpenGL can greatly improve the quality of the graphics.

  16. Open source

    Software that is developed, released to and used by the public, free as an alternative to software from large companies.

  17. Opentype

    A method for storing fonts suitable for Mac and Windows computers.

  18. Operating system

    Governs the way hardware and software components in a computer work together.

  19. Optical audio

    A socket that provides a high-quality sound signal between computers, amplifiers, CD and DVD players and more.

  20. Optical connection

    A high-quality audio connection found on some computers, amplifiers and speaker sets.

  21. Optical disc

    Any kind of circular disc used for storing computer data, video or music – includes CDs, DVDs and Blu-ray discs.

  22. Optical drive

    A computer device for reading or writing 5in discs, including CDs, DVDs and Blu-ray discs. Not all drives read or write all kinds of disc.

  23. Optical resolution

    The true amount of detail a scanner can 'see' as it passes across a document.

  24. Optical viewfinder

    A small window on the back of a camera that shows the view that the camera is 'seeing' through the lens.

  25. Optical zoom

    A system of magnifying the size of an image by physically adjusting the camera's lens elements.

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Computing terms explained in plain English

Router

A device used to connect more than one computer or other device to the internet.

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