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The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc.
May 13, 1985 — Compact discs become mainstream. ... The store was unique at the time because it offered customers 8,000 tapes on shelves and had a computerized check-out process. The selection ...
The unified design of the compact disc allowed consumers to purchase any disc or player from any company and allowed the CD to dominate the at-home music market unchallenged. [8] The Sony CDP-101, released in 1982, was the world's first commercially released compact disc player. It was originally sold only in Japan.
Digital Compact Cassette (DCC) A Digital Compact Cassette Digital, 1 ⁄ 8 inch wide tape, 1 + 7 ⁄ 8 in/s, introduced by Philips and Matsushita in late 1992, marketed as the successor to the standard analog compact cassette WAV (file format) Digital. Named after the waveform created by a sound wave. Dolby Digital Cinema Sound Digital.
Compact disc : CD-DA, CD-ROM, CD-R ... If the player calibration was out of order, or if the CAV disc was faulty or damaged, other problems affecting tracking ...
Discs are made from a 1.2 mm thick disc of polycarbonate plastic, with a thin layer of aluminium to make a reflective surface. The most common size of CD-ROM is 120 mm in diameter, though the smaller Mini CD standard with an 80 mm diameter, as well as shaped compact discs in numerous non-standard sizes and molds (e.g., business card-sized media ...
CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can only be written once and read arbitrarily many times. CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the introduction of CD-R, unlike CD-RW discs.
The Green Book, formally known as the "CD-i Full Functional Specification", defined the format for interactive, multimedia compact discs designed for CD-i players. The Green Book specification also defines a whole hardware set built around the Motorola 68000 microprocessor family, and an operating system called CD-RTOS based on OS-9 , a product ...