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digital computer
(Encyclopedia)digital computer: see computer.digital currency
(Encyclopedia)digital currency: see virtual currency. ...analog-to-digital conversion
(Encyclopedia)analog-to-digital or A/D conversion, the process of changing continuously varying data, such as voltage, current, or shaft rotation, into discrete digital quantities that represent the magnitude of th...digital-to-analog conversion
(Encyclopedia)digital-to-analog or D/A conversion, the process of changing discrete digital data into a continuously varying signal in relation to a standard or reference. There are two types of converters: electro...CD, abbreviation for compact disc
(Encyclopedia)CD: see compact disc.optical disk
(Encyclopedia)optical disk, any of a variety of information storage disks that are played or read using a laser. Optical disks include compact discs (CDs and CD-ROMs), laser discs (see videodisc), and digital versa...multimedia
(Encyclopedia)multimedia, in personal computing, software and applications that combine text, high-quality sound, two- and three-dimensional graphics, animation, photo images, and full-motion video. In order to wor...personal digital assistant
(Encyclopedia)personal digital assistant (PDA), lightweight, hand-held computer designed for use as a personal organizer with communications capabilities; also called a handheld. A typical PDA has no keyboard, rely...videocassette recorder
(Encyclopedia)videocassette recorder (VCR), device that can record television programs or the images from a video camera on magnetic tape (see tape recorder); it can also play prerecorded tapes. A VCR converts the ...sound recording
(Encyclopedia)sound recording, process of converting the acoustic energy of sound into some form in which it can be permanently stored and reproduced at any time. In 1855 the inventor Leon Scott constructed a devic...Browse by Subject
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