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videodisc
videodisc or videodisk, disk used with a special player and television to reproduce both pictures and sound. A videodisc player cannot record television programs off the air for later playback, unlike a videocassette recorder (VCR) or recordable DVD (see digital versatile disc ). Videodiscs ...
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compact disc
compact disc (CD), a small plastic disc used for the storage of digital data. As originally developed for audio systems, the sound signal is sampled at a rate of 44,100 times a second, then each sample is measured and digitally encoded on the 4 3/4 in (12 cm) disc as a series of microscopic pits...
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videocassette recorder
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 separate audio and video portions of a television or video camera signal to magnetic flux variati...
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Edward Roscoe Murrow
Edward Roscoe Murrow 1908-65, American news broadcaster, b. Greensboro, N.C. He joined the Columbia Broadcasting System (CBS) in 1935 and became its European director two years later, assembling and training a news staff to cover the impending war. As a CBS war correspondent (1939-45) Murrow was no...
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optical disk
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 versatile discs (or digital video discs; DVDs and DVD-ROMs). WORM [ W rite O nce/ R ead M any] ...
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theremin
theremin thĕr´emen , one of the earliest electronic musical instruments, invented (1920) in the Soviet Union and named for its creator, Leon Theremin . A forerunner of the synthesizer, it consists of a wooden box fitted with two radio-frequency oscillators and two metal antennas, a vert...
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computer
computer device capable of performing a series of arithmetic or logical operations. A computer is distinguished from a calculating machine, such as an electronic calculator , by being able to store a computer program (so that it can repeat its operations and make logical decisions), by the numbe...
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multimedia
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 work with multimedia, a personal computer typically requires a powerful microprocessor, large memory an...
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microprocessor
microprocessor integrated circuit containing the arithmetic, logic, and control circuitry required to interpret and execute instructions from a computer program . When combined with other integrated circuits that provide storage for data and programs, often on a single semiconductor base to fo...
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Walt Disney
Walt Disney (Walter Elias Disney) , 1901-66, American movie producer and pioneer in animated cartoons, b. Chicago. He grew up in Missouri, in the small town of Marceline and in Kansas City. He moved to Chicago in 1917, where he studied at the Academy of Fine Arts and began (1920) his career as a c...
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