D

D

Data (treated as singular, plural, or as a mass noun) is any sequence of one or more symbols given meaning by specific act(s) of interpretation.

Data (or datum – a single unit of data) requires interpretation to become information. To translate data to information, there must be several known factors considered. The factors involved are determined by the creator of the data and the desired information. The term metadata is used to reference the data about the data.

https://en.m.wikipedia.org/wiki/Data_(computing)

In signal processing, data compressionsource coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder.

https://en.m.wikipedia.org/wiki/Data_compression#Audio

In telecommunication, data signaling rate (DSR), also known as gross bit rate, is the aggregate rate at which data pass a point in the transmission path of a data transmission system.

https://en.m.wikipedia.org/wiki/Data_signaling_rate

Dell

Dell is an American multinational computer technology company that develops, sells, repairs, and supports computers and related products and services. Named after its founder, Michael Dell, the company is one of the largest technology corporations in the world, employing more than 165,000 people in the U.S. and around the world. It is one of the biggest PC product companies in the world.

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https://en.m.wikipedia.org/wiki/Dell

Deutsche Telekom

Deutsche Telekom AG (German pronunciation: [ˌdɔʏtʃə ˈteːləkɔm ʔaːˌɡeː] (About this soundlisten); short form in writing only: DT; stylised as ·T···) is a German telecommunications company headquartered in Bonn and by revenue the largest telecommunications provider in Europe. Deutsche Telekom was formed in 1995, as the former state-owned monopoly Deutsche Bundespost was privatised. Since it was privatized, Deutsche Telekom has featured among Fortune 500 companies with its latest ranking 86 in 2020. The company operates several subsidiaries worldwide, including the mobile communications brand T-Mobile.

As of April 2020, the German government holds a 14.5% stake in company stock directly, and another 17.4% through the government bank KfW. The company is a component of the EURO STOXX 50 stock market index.

The Deutsche Bundespost was the federal German government postal administration created in 1947 as a successor to the Reichspost. It was also the major telephone company in West Germany.

On 1 July 1989, as part of a post office reform, Deutsche Bundespost was split into three entities, one being Deutsche Telekom. On 1 January 1995, as part of another reform, Deutsche Bundespost Telekom became Deutsche Telekom AG, and was privatized in 1996. As such, it shares a common heritage with the other privatized Deutsche Bundespost companies, Deutsche Post (DHL) and Deutsche Postbank.

Deutsche Telekom was the monopoly Internet service provider (ISP) for Germany until its privatization in 1995, and the dominant ISP thereafter. Until the early 21st century, Deutsche Telekom controlled almost all Internet access by individuals and small businesses in Germany, as they were one of the first German telecom units.

https://en.m.wikipedia.org/wiki/Deutsche_Telekom

Digital audio is sound that has been recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is encoded as numerical samples in continuous sequence. For example, in CD audio, samples are taken 44100 times per second each with 16 bit sample depth. Digital audio is also the name for the entire technology of sound recording and reproduction using audio signals that have been encoded in digital form. Following significant advances in digital audio technology during the 1970s, it gradually replaced analog audio technology in many areas of audio engineering and telecommunications in the 1990s and 2000s.

https://en.m.wikipedia.org/wiki/Digital_audio

digital camera or digicam is a camera that captures photographs in digital memory. Most cameras produced today are digital, and while there are still dedicated digital cameras, many more cameras are now being incorporated into mobile devices, portable touchscreen computers, which can, among many other purposes, use their cameras to initiate live video-telephony and directly edit and upload imagery to others. However, high-end, high-definition dedicated cameras are still commonly used by professionals.

https://en.m.wikipedia.org/wiki/Digital_camera

DJI

SZ DJI Technology Co., Ltd. or Shenzhen DJI Sciences and Technologies Ltd. (Chinese: 深圳大疆创新科技有限公司) in full, more popularly known as its trade name DJI, which stands for Da-Jiang Innovations (大疆创新; ‘Great Frontier Innovations’), is a Chinese technology company headquartered in Shenzhen, Guangdong with manufacturing facilities throughout the world. DJI manufactures commercial unmanned aerial vehicles (drones) for aerial photography and videography. It also designs and manufactures camera gimbals, action cameras, camera stabilizers, flight platforms and propulsion systems and flight control systems.

DJI accounts for around 70% of the world’s consumer drone market as of March 2020, with no other company accounting for more than 5%. Its camera drone technology is widely used in the music, television and film industries. The company’s products have also been used by militaries and police forces, as well as terrorist groups, with the company taking steps to limit access to the latter. US government institutions have issued statements discouraging their internal use of DJI products, but as of 2020, various agencies at the local and federal level continue to use DJI products.

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https://en.m.wikipedia.org/wiki/DJI

In computer networks, download means to receive data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar systems. This contrasts with uploading, where data is sent to a remote server. A download is a file offered for downloading or that has been downloaded, or the process of receiving such a file.

https://en.m.wikipedia.org/wiki/Download

An unmanned aerial vehicle (UAV) (or uncrewed aerial vehicle, commonly known as a drone) is an aircraft without a human pilot on board and a type of unmanned vehicle. UAVs are a component of an unmanned aircraft system (UAS); which include a UAV, a ground-based controller, and a system of communications between the two. The flight of UAVs may operate with various degrees of autonomy: either under remote control by a human operator or autonomously by onboard computers.

https://en.m.wikipedia.org/wiki/Unmanned_aerial_vehicle