what is a cd disc
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Fast Guide to CD/DVD SecurActive Performance Vision. CD-R (for compact disc, recordable) is a type of write once, read many (WORM) compact disc (CD) format that allows one-time recording on a disc. The CD-R (as well as the CD-RW) format was introduced by Philips and Sony in their 1988 specification document, the Orange Book.
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Super Audio CD (SACD) Super Audio CD (SACD) Super Audio Compact Disk (SACD) is a high-resolution audio CD format. Version 1.0 specifications were described by Philips and Sony in March of 1999, in the Scarlet Book. SACD and DVD-Audio (DVD-A) are the two formats competing to replace the standard audio CD.
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- Despite appearances to the contrary, a CD and a DVD are distinctively different physically from each other. For example, a DVD disc uses a substrate half as thick as does a CD (0.6 mm vs. 1.2 mm) as well as smaller pit and lands and has less distance between the coils of the data track.
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Fast Guide to CD/DVD Super Audio Compact Disk (SACD) is a high-resolution audio CD format. Version 1.0 specifications were described by Philips and Sony in March of 1999, in the Scarlet Book. Super Audio Compact Disk (SACD) is a high-resolution audio CD format. Version 1.0 specifications were described by Philips and Sony in March of 1999, in the Scarlet Book. SACD and DVD-Audio (DVD-A) are the two formats competing to replace the standard audio CD. Most of the industry is backing DVD-A, with Philips and Sony being the major exceptions.
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Digital Versatile Disc-Read Only Memory (DVD-ROM) Definition - What does Digital Versatile Disc-Read Only Memory (DVD-ROM) mean? Digital versatile disc-read only memory (DVD-ROM) is a read-only digital versatile disc (DVD) commonly used for storing large software applications. It is similar to a compact disk-read only memory (CD-ROM) but has a larger capacity. A DVD-ROM stores around 4.38 GB of data. A CD-ROM usually stores 650 MB of data.
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What is the difference between CD, DVD, and Blu-ray discs? The DVD (Digital Versatile Disc) is similar to CD, but can store up to 4.7 GB or with double layering / double siding can store up to 8.5 GB or maximum up to 17 GB at best. Movies can be stored in DVD. The Blue-ray has greater capacity up to 50 GB and can store HD videos.
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- Let's take a look at their structure. The CD is composed of one thick layer of polycarbonate with a data layer on top, followed by a metal layer that reflects the laser beam onto the sensor, followed by a metal-protecting lacquer, topped by the surface layer. The DVD structure is a lot different.
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- 1 A CD player is a digital device: the music is stored on a CD in the form of numbers, represented by little bumps that are read by a laser. 2  In theory, the disc can be dirty or damaged and it won't make any difference to the quality of the sound you hear.
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Difference Between DVD-R and CD-R Difference Between DVD-R and CD-R. DVD-R and CD-R are two devices used to store data. While DVD-R stands for Digital Versatile Discs-Recordable, CD-R stands for Compact Disc-Recordable. The basic difference between the two lies in the amount of data they can store. While a CD is able to store only 700 MB data, a DVD-R can hold up to 4.7 GB of data.
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Compact Disc A compact disc is a deceptively simple looking device considering the technology required to make it. 1  CDs consist of three layers of materials: 2  A base layer made of a polycarbonate plastic. 3  A thin layer of aluminum coating over the polycarbonate plastic. 4  A clear protective acrylic coating over the aluminum layer.
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What's the Difference Between a DVD Case and CD Case? Mini CD Jewel Case is specially designed for mini CDs / DVDs. The Mini CD/DVD Jewel Case allows you to securely package any mini size CD/DVD. Made of hard, high quality clear plastic, this Mini CD/DVD Jewel Case features clips on the front tray to hold inserts and a mini media.
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CD player Another type of carousel CD player is the mega-disc or jukebox CD players as they are also known. They usually hold anywhere from 50 to 300 discs. The mega-disc CD player holds its discs in a vertical position in slots that are located 360 degrees around the carousel. When a disc is selected to be played, the carousel rotates so that the disc can be picked up by a pickup mechanism and placed in CD playback unit.
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Fast Guide to CD/DVD Format of the CD-ROM is the same as for audio CDs: a standard CD is 120 mm (4.75 inches) in diameter and 1.2 mm (0.05 inches) thick and is composed of a polycarbonate plastic substrate (underlayer - this is the main body of the disc), one or more thin reflective metal (usually aluminum) layers, and a lacquer coating.
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- Optical discs. Compact disc (CD) is a digital optical disc data storage format released in 1982 and co-developed by Philips and Sony. The format was originally developed to store and play only sound recordings but was later adapted for storage of data (CD-ROM).
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Translations for CD-ROM Freebase(0.00 / 0 votes)Rate this definition: CD-ROM. A CD-ROM is a pre-pressed compact disc which contains data. The name is an acronym which stands for Compact Disc Read-only Memory. Computers can read CD-ROMs, but cannot write on them.
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What Does it Mean to Burn a CD? Almost everyone has heard the term burn a CD.. But what does it actually mean? To burn a CD simply means to copy or write information onto a compact disc, or CD. CD drives that are capable to writing CDs will use a laser to burn the information onto the underside of the CD and allow it to be read in CD players or CD-ROM drives. The following provides essential uses and steps for creating, or burning, your own CD.
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Compact Disc A compact disc, or CD, is an optical storage medium with digital data recorded on it. The digital data can be in the form of audio, video, or computer information. When the CD is played, the information is read or detected by a tightly focused light source called a laser (thus the name optical medium). This article will focus on audio compact discs, which are used to play back recorded music.
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Retail CD Keys What is a CD key and where can I find it? A CD Key is a printed combination of letters and numbers, found on a card, sticker, or disc included with your game's packaging. For online purchases where no physical media is shipped, the CD Key is usually included in the emailed purchase receipt.
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Optical disc drive The first laser disc, demonstrated in 1972, was the Laservision 12-inch video disc. The video signal was stored as an analog format like a video cassette. The first digitally recorded optical disc was a 5-inch audio compact disc (CD) in a read-only format created by Philips and Sony in 1975. Five years later, the same two companies introduced a digital storage solution for computers using this same CD size called a CD-ROM.
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- Here is a look at the composition of a compact disc or what CDs are made of. Answer: A compact disc or CD is a form of digital media. It is an optical device which can be encoded with digital data. When you examine a CD you can tell it is mainly plastic.
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Ripping This article is about copying digital media. For other uses, see Rip. Ripping is the process of copying audio or video content to a hard disk, typically from removable media such as compact disc (CD) or DVD, although the word refers to all forms of media. Despite the name, neither the media nor the data is damaged after extraction.
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What is the difference between DVD and CD.....? Most DVDs are of the same dimensions as compact discs (CDs) but store more than six times as much data. Variations of the term DVD often describe the way data is stored on the discs: DVD-ROM has data which can only be read and not written, DVD-R and DVD+R can only record data once and then function as a DVD-ROM.
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Compact Disc In recent years, the compact disc has become the playback medium of choice for recorded music. A compact disc, or CD, is an optical storage medium with digital data recorded on it. The digital data can be in the form of audio, video, or computer information. When the CD is played, the information is read or detected by a tightly focused light source called a laser (thus the name optical medium).
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Optical Disk Drive Defined Optical Disk Drive Defined. An optical disk drive (ODD) uses a laser light to read data from or write data to an optical disc. These include CDs, DVDs, and Blu-ray discs. This allows you to play music or watch movies using pre-recorded discs.omputer software also often comes on one of these discs, so you need an optical drive to install software. Most modern drives allow you to write to an empty disc, so you can create your own music CDs or create a back-up copy of important data.
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- Top 10 facts about the world. A CD burner, more formally a CD-R drive, is a device used to write data to a recordable compact disc. Though initially sold for hundreds of dollars when they were introduced in the mid-90s, used models can now be found quite inexpensively.ompact disc burners, used to place data on a recordable disc, have recently become very inexpensive. Jewel cases may be used to prevent scratching of compact discs that have been burned using a CD burner.
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How CDs Work How CDs Work. A CD has a single spiral track of data, circling from the inside of the disc to the outside. The fact that the spiral track starts at the center means that the CD can be smaller than 4.8 inches (12 cm) if desired, and in fact there are now plastic baseball cards and business cards that you can put in a CD player. CD business cards hold about 2 MB of data before the size and shape of the card cuts off the spiral.