Data storage device
Many different consumer electronic devices can store data.Edison cylinder phonograph ca. 1899. The Phonograph cylinder is a storage medium. The phonograph may or may not be considered a storage device. A reel to reel tape recorder Sony TC 630. T..
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Digital Audio Tape
Digital audio tape can also refer to a compact cassette with digital storage. Digital Audio Tape DAT or R DAT is a signal recording and playback medium developed by Sony in the mid 1980s. In appearance it is similar to a compact audio cassette us..
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Digital Compact Cassette
Digital Compact Cassette DCC was a short lived magnetic tape sound recording format introduced by Philips and Matsushita in late 1992. Pitched as a successor to the standard analog cassette and competitor to MiniDisc MD and Digital Audio Tape DAT..
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Direct to Disk Recording
Direct to Disk Recording refers to recording methods which bypass the use of magnetic recording tape recording directly onto disk master. Prior to the advent of digital technologies it was a term which originated in professional analogue audiophi..
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Disc
Look up disc inWiktionary the free dictionary. disk or disc may refer to: Data storage . . . Aluminum disc a magnetic recording disc used mainly for early radio recordings Blu ray Disc a high density optical disc intended mainly for video stora..
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Disk cartridge
Disk cartridge has several meanings related to computer storage. 1960s storage medium . . An early disk cartridge was a single hard disk platter encased in a protective plastic shell. When the removable cartridge was inserted into the cartridge..
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Disk pack
Disk pack is a layered grouping of hard disk platters circular rigid discs coated with a magnetic data storage surface. Disk pack is the core component of a hard disk drive. In modern hard disks the disk pack is permanently sealed inside the driv..
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Disk sector
Figure 1. Disk structures:A TrackB Geometrical sectorC Track sectorD Cluster In the context of computer disk storage a sector is a sub division of a track Figure 1 item A on a magnetic disk or optical disc. Each sector stores a fixed amount of da..
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Early IBM disk storage
The IBM 350 RAMAC was introduced in 1956 and was the world's first disk drive. This unit is being restored at the Computer History Museum 50 years later. The invention of magnetic disk storage pioneered by IBM in the 1950s was a critical componen..
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EM
Look up em inWiktionary the free dictionary. . EM Em or em has several meanings: Computing . . . emphasis typography or the HTML element for emphasis Expectation maximization algorithm used for statistical computing Scientific . . . Effecti..
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Floppy disk
A floppy disk is a data storage medium that is composed of a disk of thin flexible "floppy" magnetic storage medium encased in a square or rectangular plastic shell. Floppy disks are read and written by a floppy disk drive or FDD the initials of ..
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Hard disk failure
A head crash one type of disk failure In computing a hard disk failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A disk failure may occur in the course of normal ..
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Hard disk platter
Close up of a hard disk head resting on the disk platter. The smooth disk surface shows a mirror image of the headslider resting on its surface. A hard disk platter or disk is a component of a hard disk drive: it is the circular disk on which the..
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HP 9800 series desktop computers
The HP 9800 series was a family of programmable calculators later called desktop computers which replaced the HP 9100 calculator. The HP 9810 was a keystroke programmable computer with magnetic cards while the HP 9820 featured HPL where instead o..
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IBM Millipede
Millipede is a non volatile computer memory stored on nanoscopic pits burned into the surface of a thin polymer layer read and written by a MEMS based probe. It promises a data density of more than 1 terabit per square inch 1 gigabit per square m..
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Magnetic Scrolls
magnetic Scrolls was a British computer game developer during the mid 1980s and early 1990s. Their primary focus was the development of cutting edge text adventure games also known as interactive fiction on a variety of 8 bit and 16 bit home comp..
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Magnetic tape data storage
magnetic tape has been used for data storage for over 50 years. In this time many advances in tape formulation packaging and data density have been made. Modern magnetic tape is most commonly packaged in cartridges and cassettes. The device that ..
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Molecular memory
Molecular memory is a term used to describe data storage technologies that utilize molecular species as the data storage element rather than e.g. circuits magnetics inorganic materials or physical shapes. The molecular component can be described ..
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