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laser disc

(Encyclopedia)laser disc: see videodisc.

slipped disc

(Encyclopedia)slipped disc, rupture or herniation of an intervertebral disc. These discs separate and cushion the vertebrae, the segments of the spinal column. They are composed of an outer rim of fibrous connectiv...

digital art

(Encyclopedia)digital art, contemporary art in which computer technology is used in a wide variety of ways to make distinctive works. Digital art was pioneered in the 1970s but only came into its own as a viable ar...

digital computer

(Encyclopedia)digital computer: see computer.

digital currency

(Encyclopedia)digital currency: see virtual currency. ...

digital radio

(Encyclopedia)digital radio, audio broadcasting in which an analog audio signal is converted into a digital signal before being transmitted; also known as digital audio broadcasting (DAB) and high-definition radio....

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...

Morita, Akio

(Encyclopedia)Morita, Akio äkˈēō môrˈētä [key], 1921–99, Japanese business executive, b. Nagoya, Japan. The eldest son of a successful sake brewer, Morita joined Masaru Ibuka to found Tokyo Telecommunicat...

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...

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...