A network device, usually at a telephone company central office, that receives signals from multiple customer Digital Subscriber Line (DSL) connections and puts the signals on a high-speed backbone line using multiplexing techniques. 

A device that handles digital signals generated at or passed through a telephone company central office and forwards them across the company's backbone network.

The transmission of television signals using digital rather than conventional analog methods. Digital television is not the same thing as HDTV.

Digital television (DTV) broadcast entirely over earthbound circuits. A satellite is not used in the link between the broadcaster and the end user. DTTV signals are broadcast over the same media as the older analog terrestrial TV signals. 

DTP is Amazon.com's self-publishing service. Any United States citizen can sign up for an account, upload and sell eBooks through Amazon. Amazon developed DTP to work in conjunction with the Kindle eBook reader. 

Digital transformation is the process of achieving a major change in business and organizational activities, processes, competencies and models by leveraging the use of digital technologies.

Digital video is audio/visual in a binary format. Information is presented as a sequence of digital data, rather than in a continuous signal as analog information is.

A set of standards that define digital broadcasting using existing satellite, cable, and terrestrial infrastructures. 

An optical disc technology with a 4.7 gigabyte storage capacity on a single-sided, one-layered disk, which is enough for a 133-minute movie. DVDs can be single- or double-sided, and can have two layers on each side.

A digital enhancement of the Video Home System (VHS) videocassette recording (VCR). D-VHS allows for the recording and reproduction of up to four hours of digital high-definition television (HDTV) programming at 720 or 1080 lines per frame. 

A software application, usually for a smart phone, that serves as an electronic version of a physical wallet.

A digital version of AMPS (Advanced Mobile Phone Service). D-AMPS adds time division multiple access (TDMA) to AMPS to get three channels for each AMPS channel, tripling the number of calls that can be handled on a channel. 

A digital enhancement of the Video Home System (VHS) videocassette recording (VCR) technology that was developed by Japan Victor Company (JVC) in 1976. D-VHS is a joint effort among JVC, Hitachi, Matsushita, and Sony.

A specialized form of slivercasting in which video or multimedia content is displayed in public places for informational or advertising purposes. A digital sign usually consists of a computer or playback device connected to an LCD or plasma display.

An electronic signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and possibly to ensure that the original content of the message or document that has been sent is unchanged.

The process of converting information into a digital format . Information is organized into discrete units of data (bits) that can be separately addressed. This is the binary data that computers and many devices with computing capacity can process.