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Off-by-one error

An Off-by-one error is a logic error that often occurs in Computer programming and that often involve the checking of boundary conditions. A fencepost error occasionally called a telegraph pole or lamp-post error is a specific type of off-by-one ...

Ogg

Ogg is a free, open standard format for music, video and other multimedia. It is run by the Xiph.Org Foundation. The Ogg format is unrestricted by software patents and is designed to provide for efficient Internet streaming and for editing of hig ...

Oil lamp

An oil lamp is a lamp used for lighting by burning oil. Usually, it produces a flame by burning olive oil, or another vegetable oil, or whale oil during the 1700s and 1800s. They burned cleaner, with less smoke, than candles and other sources of ...

One instruction set computer

A One Instruction Set Computer is an abstract computer that uses only one instruction. Such computers are the extreme case or the logical conclusion of Reduced instruction set computers, although the concept has been used only in academic circles ...

One Laptop Per Child

One Laptop Per Child is an organization founded at the Massachusetts Institute of Technology. It is a non-profit organisation. It wants to make cheap laptops so that children in less rich countries without as much technology can also use a comput ...

OneDrive

Microsoft OneDrive is a free file hosting service. It lets users upload files to a cloud storage. The files can be accessed from a Web browser. It was part of the Windows Live range of services. To use the OneDrive service, a user needs a Microso ...

Online and offline

Online and offline are terms used in telecommunications. If a computer or a user is connected to the Internet, it is said to be "online". A website, for example, is online, because it is on the Internet. If something is not online, it is said to ...

Online encyclopedia

An online encyclopedia, also called an internet encyclopedia, or a digital encyclopedia, is an encyclopedia accessible through the internet. Such as Wikipedia, which is an example of an encyclopedia, just online.

Open Database License

The Open Database License is a copyright license for sharing database contents. The ODbL is "copyleft" because it makes the copyrighted work easier to share. The license is provided by the Open Knowledge Foundation. In September 2012 the OpenStre ...

Open Mobile Alliance

The Open Mobile Alliace is an organization that develops standards for mobile phones and mobile networks. It is supported by ITU among others. Examples of standards they developed include Multimedia Messaging Service or the Wireless Application P ...

Open source

Open source is a software similar to free software, but is more related to business. It is different from other software because the source code is available to everyone. The source code is a set of instructions for the computer, written in a pro ...

OpenDocument

OpenDocument Format is a computer file format for word processors, presentation software and other computer programs. For example, OpenOffice and LibreOffice are programs that uses ODF to save text, slideshows and spreadsheets.

OpenGL

OpenGL is a programming interface for 3D graphics which helps computer programmers make their 3D graphics perform better and faster by running parts of their programs on a video card rather than just the central processor. Programming interfaces ...

OpenSolaris

OpenSolaris was an open source Unix operating system from Sun Microsystems. It was based Suns non-free Solaris operating system. The operating system was known for its ZFS file system. In 2010, Oracle Corporation bought Sun Microsystems and chose ...

OpenStep

OpenStreetMap

OpenStreetMap is a free editable map of the whole world. It is made by people from the entire world. People make the maps using data from a GPS device and pictures from airplaces. Map vector information can be downloaded under the Open Database L ...

OpenSUSE

openSUSE is a community project, sponsored by Novell and AMD, to develop and maintain a general purpose Linux distribution. After taking over SUSE Linux in January 2004, Novell decided to release the SUSE Linux Professional product as a 100% open ...

OpenWrt

OpenWrt is an operating system for network devices, such as wired and wireless routers, firewalls, and switches. OpenWrt can be used to run many routers from different manufacturers. It replaces the original factory firmware. OpenWrt can add ente ...

OpenZaurus

On April 26, 2007, it was announced that the OpenZaurus project was over. Future development efforts are to focus on the Ångstrom distribution for embedded systems.

Opera (web browser)

Opera is a web browser that formerly included e-mail, webfeed reader, and IRC Chat. There are versions available for several operating systems. These include Microsoft Windows, Mac OS X, Solaris, FreeBSD, and Linux. There are also version for mob ...

OPERA experiment

The Oscillation Project with Emulsion-tRacking Apparatus is a scientific experiment for detecting tau neutrinos from muon neutrino oscillations. The experiment is a joint effort between the European Centre for Nuclear Research and the Gran Sasso ...

Opera Software

Oppo F17 Pro

The Oppo F17 Pro is a phone developed by Oppo. It is the latest phone in the Oppo F Series, a range of devices marketed towards consumers looking a mid-range phone. The phone was released in India on September 7, 2020, and later went on the marke ...

Oppo Neo

Optical character recognition

Optical character recognition is a method of automatic data entry. OCR software is used to convert handwritten, type-written or printed text into data that can be edited on a computer. In simple systems, the paper documents are scanned with an im ...

Optical gain medium

An optical gain medium can make light stronger. In general, gain media must be powered by another energy source in order to have energy to provide as light. Some gain media can be powered using electricity, but many others need light energy from ...

Optimization (computer science)

In computing, optimization is the process of modifying a system to make some features of it work more efficiently or use fewer resources. For instance, a computer program may be optimized so that it runs faster, or to run with less memory require ...

Opto-isolator

Oracle Database

OS X Mavericks

OS X 10.9 "Mavericks" is an operating system made by Apple Inc. for its Macintosh line of computers. It is a version of OS X, and carries the release number 10.9. It was released on October 22, 2013. According to Apple, "Mavericks" contains over ...

OS X Yosemite

OS X Yosemite is the eighth major version of Apples computer operating system, OS X. It was announced at Apples Worldwide Developers Conference 2014 on June 2, 2014, and was released to developers and beta testers on that same day. It will be rel ...

OS/2

OS/2 is an operating system that was originally made by a joint agreement between the Microsoft and IBM companies. The name stands for "Operating System/2". It was intended to replace MS-DOS and Microsoft Windows. OS/2 was maintained by IBM until ...

Out-of-order execution

In computer engineering, out-of-order execution, OoOE, is a technique used in most high-performance microprocessors to make use of cycles that would otherwise be wasted by a certain type of costly delay. Most modern CPU designs include support fo ...

Outlook Express

Microsoft Outlook Express, also known as Microsoft Internet Mail and News, is an email program and newsreader program made by Microsoft. It is a free version of Outlook, also made by Microsoft. Microsofts Outlook Express was discontinued in 2006 ...

Outlook.com

Outlook.com is a free online email, address book and calendar. It is owned by Microsoft. It was started in 1996 as Hotmail. Sabeer Bhatia and Jack Smith created it. In 1997, Microsoft bought Hotmail for about 0 million. They renamed it twice, to ...

Output

Output is what comes out of something. An example of output is when someone talks. The word is usually used when talking about computers. When someone tells a computer to do something, what it does is the output. Usually, output changes when some ...

Output device

Video card and monitor screen: displays information on the screen for you to look at. Computer terminal Sound card and speaker: that play sounds and music. numerical controlled machine tools. Computer printer: It takes information from a computer ...

Overstock.com

Overstock.com is an Internet retailer based in Cottonwood Heights, Utah, near Salt Lake City. It was started in 1997 by Robert Brazell and originally called D2: Discounts Direct. It was an online seller of surplus merchandise which, upon its fail ...

Pacific Northwest tree octopus

The Pacific Northwest Tree Octopus is a fake animal created in 1998 by Lyle Zapato. Zapatos website says the tree octopus is real, and that it lives on both land and water. Zapato created this website about the fake tree octopus to show how impor ...

Package management system

A package management system keeps track of information about software packages: what files go where, and which package owns that file, therefore behaving like a phone directory. Examples of package management systems for Linux include dpkg, rpm a ...

PackageKit

PackageKit is a free group of software applications designed to provide a consistent and high-level front end for a number of different package management systems. PackageKit was made by Richard Hughes.

Pagani

Horacio Pagani used to work with Lamborghini on cars like the Lamborghini Diablo. In the late 1980s, he started to design his own cars. In 1992, he started to work on a concept-car for his very own car. In 1994, he made a deal with Mercedes-Benz. ...

Page cache

A page cache or disk cache is a buffer of pages certain operating systems keep in memory. These operating systems usually use paging. The page cache uses virtual memory techniques to cache file data as pages rather than as file system oriented bl ...

Page replacement algorithm

Certain operating systems use paging to get virtual memory. This means that a part of the hard disk or a file is used so that the applications or the operating system see more memory that is actually there. A Page replacement algorithm is an algo ...

Page Up and Page Down keys

The Page Up and Page Down keys are two computer keys that you press to either scroll up or scroll down on documents. The page up and page down scrolling distance sometimes varies depending on which documents you are reading. If the page up of pag ...

Paint.net

paint.net is a free software picture maker. Rick Brewster wrote the program as a student project at Washington State University. It was a simple replacement for Microsoft Paint. There have been many versions of the program and it has become more ...

PAL region

Palette

A palette is used for mixing colours.They are usually made out of plastic or wood but can be made out of other materials. An artist often uses one of these and is in fact an essential item in art, when painting.

Palette knife

Palm OS

Palm OS is an operating system that is made to work on small computer devices, mostly Personal Digital Assistants. Palm OS was first released in 1996, when the Palm 1000 was released.

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Parameter (computer science)

Permissive software license

Petabyte

Phablet

Philae (spacecraft)

Philippine Space Agency

Physical Address Extension

Plan 9 from Bell Labs

Pointer (computer programming)

Polar coordinate system

Portable Document Format

Portable Network Graphics

Power line communication

Power network

PowerBook

Predictive Failure Analysis

Process switching latency

Production line

Program specification

Programmable read-only memory

Programmer

List of programming languages

Quantum teleportation

Quartz clock

Query language

Questia Online Library

QuickTime

Quora

R/The Donald

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Pino - logical board game which is based on tactics and strategy. In general this is a remix of chess, checkers and corners. The game develops imagination, concentration, teaches how to solve tasks, plan their own actions and of course to think logically. It does not matter how much pieces you have, the main thing is how they are placement!

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ⓘ Free online encyclopedia. Did you know? page 37