ⓘ Free online encyclopedia. Did you know? page 31



                                               

Dpkg

dpkg is the name of a computer package management system. It is the primary package manager of the Debian GNU/Linux operating system. It was written in the C programming language, and started in 1993.

                                               

DragonFly BSD

DragonFly BSD is an open source, Unix-like operating system focused on symmetric multiprocessing. Features introduced in DragonFly BSD include Light Weight Kernel Threads and the HAMMER filesystem. Matthew Dillon created DragonFly BSD from FreeBS ...

                                               

Drift mining

Drift mining is a way of mining where tunnels are dug horizontally. It was used by the coal industry in the 1700s. It would follow a coal seam into a hillside. It was not very safe which is why it wasnt used much. It was not safe because water co ...

                                               

Drill

A drill is a type of electrical tool that has a spinning tip. It can be used for many different jobs depending on the attachment. If a drill bit is attached, the drill can be used to make holes in material. A driver bit can also be attached, allo ...

                                               

Dropsonde

A dropsonde is a weather reconnaissance device created by the National Center for Atmospheric Research, designed to be dropped from an aircraft at altitude to more accurately measure tropical storm conditions as the device falls to the ground. Th ...

                                               

Drupal

Drupal is a free and open source software application that is installed on servers. When installed and configured, Drupal helps people make websites that are secure, safe, and stable. Drupal also allows users to share modules with each other. Mod ...

                                               

Dry stone wall

A dry stone wall is a wall made of stone without using mortar. They are made by carefully choosing rocks that fit together. There are dry stone walls in the Yorkshire Dales in northern England.

                                               

Drywall

Drywall is a panel made of gypsum with or without additives. It is also known as plasterboard, wallboard, sheet rock, gypsum board, buster board, custard board, or gypsum panel. It is usually extruded between thick sheets of facer and backer pape ...

                                               

DSLinux

DSLinux is a port of the Linux operating system to the Nintendo DS platform. It requires only a device capable of writing to a DS Game Cart. DSLinux is not the same as DSL Damn Small Linux.

                                               

Dual in-line package

A dual in-line package is one way of making microchips and other integrated circuits. The circuit is put inside of a container made out of materials such as plastic or ceramic. All the wires of the circuit are connected to metal pins, and they st ...

                                               

Dual-tone multi-frequency

Dual-tone multi-frequency or DTMF is the group of special sounds a telephone makes when you push the buttons. Each number button makes a different sound. Telephone company equipment hears each sound and turns it back into a number. When all the n ...

                                               

Duck typing

In computer programming with object-oriented programming languages, duck typing is a way to write computer code. It doesnt demand that you know what types you are writing about. If it does what you thought it would do, it is good enough. The reas ...

                                               

DuckDuckGo

Duckduckgo is a search engine made by Gabriel Weinberg. It stresses that it does not collect information about users like Google does, and keeps data private. It headquarters is in Paoli, Pennsylvania, USA. As of March 2020, it received 56.256.59 ...

                                               

Dutch Low Saxon Wikipedia

The Dutch Low Saxon Wikipedia is the Dutch Low Saxon-language edition of Wikipedia. This edition was started in 24 March 2006. As of 23 August 2015, it has over 5.748 articles.

                                               

Dutch Wikipedia

The Dutch Wikipedia is the Dutch-language edition of Wikipedia. This edition was started in June 2001. It became the 3rd largest edition in April 2013, but has since dropped to sixth. It has over 2.051.000 articles.

                                               

DVD Talk

DVD Talk is a website for DVD enthusiasts founded in January 1999 by Geoffrey Kleinman when DVDs and DVD players were first beginning to hit the market.

                                               

DVD-Audio

DVD-Audio is an audio format similar to the CD. It is commonly claimed to have higher audio quality than the CD. DVD-Audio has not become popular due to the cost and rarity of the players, and because the traditional CD is considered good enough. ...

                                               

DVD-R

DVD-R is a recordable DVD format. It uses a thin organic dye layer which is recorded by a high-power laser. The laser bleaches the recorded areas, creating reflective areas that can then be played back with a low-power laser. A DVD-R can be recor ...

                                               

Dynamic Host Configuration Protocol

The Dynamic Host Configuration Protocol, is a protocol related to computers and networks of computers. It is referred to as DHCP for short. It was made so that computers could connect to other computers automatically. To be able to access the Int ...

                                               

Dynamic programming

Dynamic programming is a method of solving problems, which is used in computer science, mathematics and economics. Using this method, a complex problem is split into simpler problems, which are then solved. At the end, the solutions of the simple ...

                                               

Dynamic random-access memory

Dynamic random access memory is the most commonly used form of RAM. DRAM is called dynamic or active, because it must be refreshed all the time or it will lose the data which it is supposed to be storing. Because it loses data when power is remov ...

                                               

Dynamic-link library

Dynamic-link library, is the Microsofts implementation of shared libraries used by the Microsoft Windows operating systems. These libraries usually have the file extension DLL, OCX, or DRV. Any of the Microsoft Windows data files having the same ...

                                               

E-mail attachment

An e-mail attachment is a computer file that is sent along with an e-mail message. The user can attach one or more files to any e-mail message. E-mail attachments are a simple method to share documents and images. A paper clip icon is usually use ...

                                               

EasyBCD

EasyBCD is a free program developed by the non-profit NeoSmart Technologies used to configure and tweak the new Windows Vista Bootloader. EasyBCD can be used to set up dual-boots between Windows Vista and previous versions of Windows, along with ...

                                               

EBay

eBay is a website. It is a place for online auctions. Anybody can sell almost anything they want there. People can buy many things there as well. People have to send what they sell themselves, usually using mail. Some items may be collected by th ...

                                               

EBCDIC

Extended Binary Coded Decimal Interchange Code is an 8-bit character encoding. It is used mainly on IBM mainframe and IBM midrange computer operating systems. EBCDIC descended from the code used with punched cards. It was also related to the six ...

                                               

Eddy current

An eddy current can be made when you have a solenoid, in which there is a soft iron core. When you connect the solenoid to an AC power source, metal objects held above the cross sectional area of the solenoid are repelled due to Lenzs Law.

                                               

Edubuntu

Edubuntu is the version of Linux distribution Ubuntu. It is used for education. It uses GNOME and is designed for use in classrooms. Edubuntu has been created in collaboration with teachers and technologists in multiple nations. Edubuntu is built ...

                                               

EEPROM

EEPROM stands for electrically erasable programmable read-only memory and is a type of non-volatile memory used in computers, integrated in smart cards and remote keyless systems.

                                               

Egyptian Arabic Wikipedia

The Egyptian Arabic Wikipedia is the Egyptian Arabic-language edition of Wikipedia. This edition was started in November 2008. As of October 2013, it has over 10.000 articles. It was the first Wikipedia written in a dialect of Arabic.

                                               

EJB QL

EJB QL or EJB-QL is a portable database query language for Enterprise Java Beans. It can run on any database. It is used in J2EE applications. It is more complex but less powerful than SQL.

                                               

Electric bicycle

An electric bicycle is a bicycle that uses electricity as its power. These bikes do not pollute the air. Usually a biker can control how much the motor helps. For example, it can be 50% of the force needed. These kinds of bikes have become more p ...

                                               

Electric switchboard

An electric switchboard is an electrical device that directs electricity from one place to another. It is usually in the form of electrical panel in an enclosure, which contains switches for such purposes. One of the more common configurations fo ...

                                               

Electrical conduit

Conduit is a tube that electrical wires are run through. Conduit protects the wire from damage. The most common type of conduit is called electrical metallic tubing. Conduit is common in commercial and industrial installations, and in garages and ...

                                               

Electrical substation

An electrical substation is a subsidiary station of an electricity generation, transmission and distribution system where voltage is transformed from high to low or the reverse using transformers. Electric power may flow through several substatio ...

                                               

Electricity meter

An electricity meter is a device that measures the amount of electricity used by a house or business. Measurements are usually taken in kilowatt hours.

                                               

Electronic Delay Storage Automatic Calculator

Electronic Delay Storage Automatic Calculator was an early British computer. It was made by Maurice Wilkes and his team at the University of Cambridge Mathematical Laboratory in England. EDSAC was the first stored-program electronic computer. It ...

                                               

Emergency telephone

An emergency telephone is a special telephone that can be used in an emergency situation. Such telephones can usually be found on highways, and other big roads. They can also be found in places where people feel unsafe, such as big parks or the c ...

                                               

Emergency telephone number

An emergency telephone number is a telephone number that can be used to quickly contact emergency services for assistance. Emergency services usually include police, medical, or firefighting public services. Many countries public telephone networ ...

                                               

Emoji

Emojis are symbols or smiley faces often used in text messages on a mobile phone or computer. They come in all shapes and sizes, and can mean many things depending on when and how it is used. There are emoji for objects, places, emotions, and muc ...

                                               

Empty string

The empty string is the unique string of no characters over some alphabet Σ. It is written as ε or λ. The length of this empty string is 0. In simple words, given some characters of an alphabet, the empty string is the word that can be made if no ...

                                               

Emulator

An emulator is a computer program or hardware that makes one kind of computer behave like a different one, so that it can use the same programs or do the same things as the other one. They are best for using old software and games on newer comput ...

                                               

EMV

EMV is a standard protocol for credit cards and debit cards. Beforehand, such cards used a magnetic stripe to store information. This approach has two main problems: first, the amount of data that can be stored is relatively small. Such a card ca ...

                                               

Encarta

Encarta was a digital multimedia encyclopedia by Microsoft. There was a more complete version called Encarta Premium made in 2008. It had more than 62.000 articles and many photographs and illustrations. There was also music clips, videos, maps a ...

                                               

Endianness

Endianness refers to how hexadecimal data is ordered in machine language, the simplest, most understandable code that a computer can use. In computer coding, certain numbers, usually two bytes long 1 byte = 8 bits that are called "words", can be ...

                                               

Engineering tolerance

Engineering tolerance is the ability of a machine to cope with changes while still continuing to work. This includes changes to size, quality, the outside world. When a machine is made the needed engineering tolerance is set to provide a balance ...

                                               

ENIAC

ENIAC was a computer built between 1943 and 1946. It was designed by two people called John Mauchly and J. Presper Eckert. The machine was built out of nearly 17.500 vacuum tubes, 7.200 diodes and many miles of wire. It took up 1.800 square feet ...

                                               

Enterprise architecture

Enterprise architecture is comprehensive framework used to manage and align an organizations business processes, information technology, computer hardware and software, local and wide area networks, people, operations and projects with the organi ...

                                               

Enterprise Java Beans

Enterprise Java Beans is a framework that allows one to develop Enterprise applications more easily using Java Enterprise Edition. It does this by using standard components. These components specify how an application works. This is usually calle ...

                                               

EPROM

An EPROM, or erasable programmable read-only memory, is a type of memory chip. Unlike a normal programmable read-only memory, this type of chip can have its information cleared and written again. EPROMs are cleared by shining ultraviolet light on ...

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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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