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Bernoulli Box
The Bernoulli Box (or simply Bernoulli, named after Bernoulli's principle) is a high-capacity (at the time of release) removable disk storage system that was Iomega's first widely known product. It was first released in 1982. Overview The original Bernoulli Box "Alpha-10" is a 10 MB removable disk drive that spins a disk made of PET film at about 1500 rpm, 1 μm above a read-write head. Utilizing Bernoulli's principle, the rotation of the disk pulls the flexible disk media down towards the read/write head, and will continue to do so for as long as the disk is spinning. This was in an attempt to make the Bernoulli drive more reliable than a contemporaneous hard disk drive, since a head crash is made physically impossible: should the disk stop spinning for any reason, it immediately pulls away from the read/write head, preventing damage. The Bernoulli Box was released in capacities of 10 and, later, 20 MB, and its cartridges measure 8.23 x 11.02 x 0.71 inches, ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bernoulli230
Bernoulli can refer to: People *Bernoulli family of 17th and 18th century Swiss mathematicians: **Daniel Bernoulli (1700–1782), developer of Bernoulli's principle **Jacob Bernoulli (1654–1705), also known as Jacques, after whom Bernoulli numbers are named ** Jacob II Bernoulli (1759–1789) **Johann Bernoulli (1667–1748) **Johann II Bernoulli (1710–1790) **Johann III Bernoulli (1744–1807), also known as Jean, astronomer **Nicolaus I Bernoulli (1687–1759) ** Nicolaus II Bernoulli (1695–1726) * Elisabeth Bernoulli (1873–1935), Swiss temperance campaigner * Hans Benno Bernoulli (1876–1959), Swiss architect * Ludwig Bernoully (1873–1928), German architect Mathematics * Bernoulli differential equation * Bernoulli distribution and Bernoulli random variable * Bernoulli's inequality * Bernoulli's triangle * Bernoulli number * Bernoulli polynomials * Bernoulli process * Bernoulli trial * Lemniscate of Bernoulli * ''Bernoulli'', a journal published by the Bernoulli Societ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drive Bay
A drive bay is a standard-sized area for adding hardware to a computer. Most drive bays are fixed to the inside of a case, but some can be removed. Over the years since the introduction of the IBM PC, it and its compatibles have had many form factors of drive bays. Four form factors are in common use today, the 5.25-inch, 3.5-inch, 2.5-inch or 1.8-inch drive bays. These names do not refer to the width of the bay itself, but rather to the width of the disks used by the drives mounted in these bays. Form factors 8.0-inch ''8.0-inch'' drive bays were found in early IBM computers, CP/M computers, and the TRS-80 Model II. They were high, wide, and approximately deep, and were used for hard disk drives and floppy disk drives. This form factor is obsolete. 5.25-inch ''5.25-inch'' drive bays are divided into two height specifications, ''full-height'' and ''half-height''. ''Full-height'' bays were found in old PCs in the early to mid-1980s. They were high, wide, and u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iomega Storage Devices
Iomega Corporation (later LenovoEMC) was a company that produced external, portable, and networked data storage products. Established in the 1980s in Roy, Utah, United States, Iomega sold more than 410 million digital storage drives and disks, including the Zip drive floppy disk system. Formerly a public company, it was acquired by EMC Corporation in 2008, and then by Lenovo, which rebranded the product line as LenovoEMC, until discontinuation in 2018. History Iomega started in Roy, Utah, U.S. in 1980, with the original founders Jerome Paul Johnson, David Bailey, and David Norton. Its headquarters were moved to San Diego, California in 2001. For many years, it was a significant name in the data storage industry. Iomega's most famous product, the Zip drive, offered relatively large amounts of storage on portable, high-capacity floppy disks. The original Zip disk's 100MB capacity was a huge improvement over the decades-long standard of 1.44MB standard floppy disks. The Zip drive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floppy Disk Drives
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 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Disks
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box. Hard disk drives were introduced by IBM in 1956, and were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers, though personal computing devices produced in large volume, like mobile phones ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
REV (disk)
REV is a removable hard disk storage system from Iomega, released in 2004.http://web.archive.org/web/20040604143936/http://www.pocket-lint.co.uk/review.php?reviewId=404 The small removable disks store 35, 70, or 120 gigabytes (GB) and are hard-drive technology. Like a standard hard drive, the REV system uses a flying head to read and write data to a spinning platter. The removable disks contained the platter, spindle, and motor, while the drive heads and drive controller are contained within the REV drive. The drives allow for data transfer rates of about 25 megabytes (MB) per second. The REV was available as an external desktop model with FireWire, SCSI or USB 2.0 interfaces, an internal model with SCSI, ATAPI, or SATA interfaces, or an external server model which features a cartridge autoloader and SCSI interface. Iomega also offered a 320 GB network-attached storage appliance which features a built-in REV. The drives are compatible with Macintosh, Windows, and Linux op ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iomega Jaz Drive
The Jaz drive is a removable hard disk storage system sold by the Iomega company from 1995 to 2002. Following the success of the Iomega Zip drive, which in its original version stores data on high-capacity floppy disks with 100 MB nominal capacity, and later 250 and then 750 MB, the company developed and released the Jaz drive. First shipping to OEMs in December 1995, the Jaz drive featured 1 GB capacity per removable disk. A new Jaz drive model, released in February 1998, increased the individual disk capacity to 2 GB. The Jaz drive uses a SCSI interface, with both internal and external drive models. Iomega produced a Jaz Jet SCSI adapter PCI card for PCs. Iomega also produced a number of external adapters, including the Jaz Traveller interface that connected it to a standard parallel port, and, later, a SCSI-USB adapter and SCSI-Firewire adapter. An ATA version of the drive was planned but never released. Reception The Jaz never attained as much success or market penetratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zip Drive
The Zip drive is a removable floppy disk storage system that was announced by Iomega in 1994 and began shipping in March 1995. Considered medium-to-high-capacity at the time of its release, Zip disks were originally launched with capacities of 100 megabytes, MB, then 250 MB, and finally 750 MB. The format became the most popular of the superfloppy products which filled a Niche market, niche in the late 1990s portable storage market. However, it was never popular enough to replace the standard -inch floppy disk. Zip drives fell out of favor for mass portable storage during the early 2000s as CD-RW and USB flash drives became prevalent. The Zip brand later covered internal and external CD writers known as Zip-650 or Zip-CD, despite the dissimilar technology. Overview The Zip drive is a "superfloppy" disk drive that has all of the standard -inch floppy drive's convenience, but with much greater capacity options and with performance that is much improved over a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BYTE
The byte is a 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 of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures. To disambiguate arbitrarily sized bytes from the common 8-bit definition, network protocol documents such as the Internet Protocol () refer to an 8-bit byte as an octet. Those bits in an octet are usually counted with numbering from 0 to 7 or 7 to 0 depending on the bit endianness. The size of the byte has historically been 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 computers using six-bit and nine-bit bytes were common in the 1960s. These systems often had memory words of 12, 18, 24, 30, 36, 48, or 60 bits, corresponding t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Webster
Bruce F. Webster is an American academic and software engineer. He is a principal at Bruce F. Webster & Associates and an adjunct professor in computer science at Brigham Young University. Early life and education Webster received a full National Merit Scholarship to study computer science at Brigham Young University, graduating in 1978 with a bachelor's degree. He went on to work in computer science at the University of Houston-Clear Lake in Houston, Texas. Career Webster has written over 150 articles on the computer industry and software development. He has also written four books on information technology (IT) issues, including ''The NeXT book'', ''Pitfalls of Object-Oriented Development'', ''The Art of ‘Ware'', and ''The Y2K Survival Guide'', and contributed to two others. He authored PricewaterhouseCoopers' 2000 white paper, ''Patterns in IT Litigation: System Failure''. He also wrote for two years as an IT management columnist for '' Baseline''. In the 1980s, Web ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PC Magazine
''PC Magazine'' (shortened as ''PCMag'') is an American computer magazine published by Ziff Davis. A print edition was published from 1982 to January 2009. Publication of online editions started in late 1994 and continues . Overview ''PC Magazine'' provides reviews and previews of the latest hardware and software for the information technology professional. Other regular departments include columns by long-time editor-in-chief Michael J. Miller ("Forward Thinking"), Bill Machrone, and Jim Louderback, as well as: * "First Looks" (a collection of reviews of newly released products) * "Pipeline" (a collection of short articles and snippets on computer-industry developments) * "Solutions" (which includes various how-to articles) * "User-to-User" (a section in which the magazine's experts answer user-submitted questions) * "After Hours" (a section about various computer entertainment products; the designation "After Hours" is a legacy of the magazine's traditional orientation to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Write Protection
Write protection is any physical mechanism that prevents writing, modifying, or erasing data on a device. Most commercial software, audio and video on writeable media is write-protected when distributed. Examples * IBM -inch magnetic tape reels, introduced in the 1950s, had a circular groove on one side of the reel, into which a soft plastic ring had to be placed in order to write on the tape. ("No ring, no write.") * Audio cassettes and VHS videocassettes have tabs on the top/rear edge that can be broken off (uncovered = protected). * 8 and -inch floppies can have, respectively, write-protect and write-enable notches on the right side (8-inch punched = protected; -inch covered/notch not present = protected). A common practice with single-sided floppies was to punch a second notch on the opposite side of the disk to enable use of both sides of the media, creating a flippy disk, so called because one originally had to flip the disk over to use the other side. * -inch floppy di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
