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LS-240
The SuperDisk LS-120 is a high-speed, high-capacity alternative to the 90 mm (3.5 in), 1.44 MB floppy disk. The SuperDisk hardware was created by 3M's storage products group Imation in 1996, with manufacturing chiefly by Matsushita. The SuperDisk had little success in North America; with Compaq, Gateway and Dell being three of only a few OEMs who supported it. It was more successful in Asia and Australia, where the majority of second-generation SuperDisk LS-240 drives and disks were released. There was one model of LS-240 drive released in North America, by QPS. SuperDisk worldwide ceased manufacturing in 2003. History The design of the SuperDisk system came from an early 1990s project at Iomega. It is one of the last examples of floptical technology, where lasers are used to guide a magnetic head which is much smaller than those used in traditional floppy disk drives. Iomega orphaned the project around the time they decided to release the Zip drive in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SuperDisk Mac - USB To IDE Adapter
The SuperDisk LS-120 is a high-speed, high-capacity alternative to the 90 mm (3.5 in), 1.44 Megabyte, MB floppy disk. The SuperDisk hardware was created by 3M's storage products group Imation in 1996, with manufacturing chiefly by Panasonic, Matsushita. The SuperDisk had little success in North America; with Compaq, Gateway, Inc., Gateway and Dell being three of only a few Original equipment manufacturer, OEMs who supported it. It was more successful in Asia and Australia, where the majority of second-generation SuperDisk LS-240 drives and disks were released. There was one model of LS-240 drive released in North America, by QPS. SuperDisk worldwide ceased manufacturing in 2003. History The design of the SuperDisk system came from an early 1990s project at Iomega. It is one of the last examples of floptical technology, where lasers are used to guide a magnetic head which is much smaller than those used in traditional floppy disk drives. Iomega orphaned the pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SuperDisk Voice Coil And Eject
The SuperDisk LS-120 is a high-speed, high-capacity alternative to the 90 mm (3.5 in), 1.44 MB floppy disk. The SuperDisk hardware was created by 3M's storage products group Imation in 1996, with manufacturing chiefly by Matsushita. The SuperDisk had little success in North America; with Compaq, Gateway and Dell being three of only a few OEMs who supported it. It was more successful in Asia and Australia, where the majority of second-generation SuperDisk LS-240 drives and disks were released. There was one model of LS-240 drive released in North America, by QPS. SuperDisk worldwide ceased manufacturing in 2003. History The design of the SuperDisk system came from an early 1990s project at Iomega. It is one of the last examples of floptical technology, where lasers are used to guide a magnetic head which is much smaller than those used in traditional floppy disk drives. Iomega orphaned the project around the time they decided to release the Zip drive in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floppy Disk
A floppy disk or floppy diskette (casually referred to as a floppy, a diskette, or a disk) is a type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined with a fabric that removes dust particles from the spinning disk. The three most popular (and commercially available) floppy disks are the 8-inch, 5¼-inch, and 3½-inch floppy disks. Floppy disks store digital data which can be read and written when the disk is inserted into a floppy disk drive (FDD) connected to or inside a computer or other device. The first floppy disks, invented and made by IBM in 1971, had a disk diameter of . Subsequently, the 5¼-inch (133.35 mm) and then the 3½-inch (88.9 mm) became a ubiquitous form of data storage and transfer into the first years of the 21st century. 3½-inch floppy disks can still be used with an external USB floppy disk drive. USB drives for 5¼-inch, 8-inch, and other-size floppy disks are rare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floptical
Floptical refers to a type of floppy disk drive that combines magnetic and optical technologies to store data on media similar to standard -inch floppy disks. The name is a portmanteau of the words "floppy" and "optical". It refers specifically to one brand of drive and disk system, but is also used more generically to refer to any system using similar techniques. The original Floptical technology was announced in 1988 and introduced late in 1991 by Insite Peripherals, a venture funded company set up by Jim Adkisson, one of the key engineers behind the original -inch floppy disk drive development at Shugart Associates in 1976. The main shareholders were Maxell, Iomega and 3M. This original format normally held 21 MB of data, compared to the contemporary 3.5" floppy capacity of 720 kB or 1.44 MB. Over the next several years, similar products were introduced by other companies with ever increasing capacity, eventually reaching 240 MB in some systems. All of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MSD Super Disk
The MSD Super Disk were a series of 5¼-inch floppy disk drives compatible to some degree with the Commodore 1541 disk drive. produced by Micro Systems Development (Dallas, Texas; later MSD Systems) for use with Commodore 8-bit home computers. Two different versions of the MSD Super Disk were available: the single-drive model, SD-1; and the dual-drive model, SD-2. Introduction Introduced in 1983, the MSD Super Disk drives were the first third-party devices designed for compatibility with the Commodore 64, although other manufacturers soon followed suit. The MSD drives include both an IEEE-488 parallel interface and the custom Commodore serial interface. Therefore, they can be connected to any Commodore 8-bit system, from the Commodore PET to the C64 and C128, without any converters or other add-on devices. Features and pricing The MSD SD-1 was more expensive than the Commodore 1541. For instance, a typical mail-order advertisement in the January 1985 issue of '' RUN'' Magazine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsubishi Electric
is a Japanese Multinational corporation, multinational electronics and electrical equipment manufacturing company headquartered in Tokyo, Japan. The company was established in 1921 as a spin-off from the electrical machinery manufacturing division of Mitsubishi Shipbuilding (Mitsubishi Heavy Industries) at the Kobe Shipyard. A member of the Mitsubishi, Mitsubishi Group, Mitsubishi Electric produces elevators and escalators, high-end home appliances, air conditioning, Factory automation, factory automation systems, train systems, electric motors, pumps, semiconductors, digital signage, and satellites. History Mitsubishi Electric was established as a spin-off from the Mitsubishi Group's other core company Mitsubishi Heavy Industries, then Mitsubishi Shipbuilding, as the latter divested a marine electric motor factory in Kobe, Nagasaki Prefecture, Nagasaki. It has since diversified to become the major electronics company. Mitsubishi Electric held the record for the fastest e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mebibyte
The byte is a units of information, unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character (computing), character of text in a computer and for this reason it is the smallest address space, addressable unit of Computer memory, memory in many computer architectures. To disambiguate arbitrarily sized bytes from the common 8-bit computing, 8-bit definition, Computer network, network protocol documents such as the Internet Protocol () refer to an 8-bit byte as an Octet (computing), octet. Those bits in an octet are usually counted with numbering from 0 to 7 or 7 to 0 depending on the bit numbering, bit endianness. The size of the byte has historically been Computer hardware, hardware-dependent and no definitive standards existed that mandated the size. Sizes from 1 to 48 bits have been used. The six-bit character code was an often-used implementation in early encoding systems, and compute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zone Bit Recording
In computer storage, zone bit recording (ZBR) is a method used by disk drives to optimise the tracks for increased data capacity. It does this by placing more sectors per zone on outer tracks than inner tracks. This contrasts with other approaches, such as '' constant angular velocity'' (CAV) drives, where the number of sectors per track are the same. On a disk consisting of roughly concentric tracks, whether realized as separate circular tracks or as a single spiral track, the physical track length (circumference) is increased as it gets further from the centre hub. The inner tracks are packed as densely as the particular drive's technology allows. The packing of the rest of the disks is changed depending on the type of disk. Zone recording was pioneered and patented by Chuck Peddle in 1961 while working for General Electric. With a CAV-drive the data on the outer tracks are the same angular width of those in the centre, and so less densely packed. Using ZBR instead, the inner ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partial-response Maximum-likelihood
In computer data storage, partial-response maximum-likelihood (PRML) is a method for recovering the digital data from the weak analog read-back signal picked up by the head of a magnetic disk drive or tape drive. PRML was introduced to recover data more reliably or at a greater areal-density than earlier simpler schemes such as peak-detection. These advances are important because most of the digital data in the world is stored using magnetic storage on hard disk or tape drives. Ampex introduced PRML in a tape drive in 1984. IBM introduced PRML in a disk drive in 1990 and also coined the acronym PRML. Many advances have taken place since the initial introduction. Recent read/write channels operate at much higher data-rates, are fully adaptive, and, in particular, include the ability to handle nonlinear signal distortion and non-stationary, colored, data-dependent noise ( PDNP or NPML). ''Partial response'' refers to the fact that part of the response to an individual bit may occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WinHelp
Microsoft WinHelp is a proprietary format for online help files that can be displayed by the Microsoft Help browser ''winhelp.exe'' or ''winhlp32.exe''. The file format is based on Rich Text Format (RTF). It remained a popular Help platform from Windows 3.0 through Windows XP. WinHelp was removed in Windows Vista purportedly to discourage software developers from using the obsolete format and encourage use of newer help formats. Support for WinHelp files would eventually be removed entirely in Windows 10. History * 1990 – WinHelp 1.0 shipped with Windows 3.0. * 1995 – WinHelp 4.0 shipped with Windows 95 / Windows NT. * 2006 – Microsoft announced its intentions to phase out WinHelp as a supported platform. WinHelp is not part of Windows Vista out of the box. WinHelp files come in 16 bit and 32 bit types. Vista treats these files types differently. When starting an application that uses the 32 bit .hlp format, Windows warns that the format is no longer supported. A download ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
