Parrot Corporation Limited was a British floppy diskette manufacturer formed in 1983, that operated from Llantarnam Industrial Park in Cwmbran, south Wales.Receivers report. Held at Companies House. Reference JPC/NDF/JJH/CPARROT The company was a start-up venture funded by the Welsh Development Agency (WDA).
|
|
You may specify sequence keys, which are specific data field(s) within each record, for comparison of records. Also, you may specify a selection procedure." The software came on a single 5¼" floppy diskette. The software and manual came packaged in a hinged Perspex box, which Microsoft described as "EaselBox".
|
|
It used 14" fixed disks (30 or 60MB) and could support up to two; RAM (main storage) ranged from 128KB to 512 KB. One 8" floppy diskette drive was built in. The 5362 also allowed the use of a channel attached external desktop 9332-200, 400, & 600 DASD, effectively allowing a maximum of 720MB.
|
|
The upgrade consisted of a single chip swap (and a trivial motherboard modification), which Apple provided free only to persons who purchased a UniDisk 3.5 drive. A small sticker with an icon of a 3.5-inch floppy diskette was placed next to the existing 5.25-inch diskette icon above the floppy drive port indicating the machine had been upgraded.
|
|
The advantage of doing this is that the AD8088's solid- state memory is much faster than the mechanical rotating storage of a floppy diskette. The disadvantage is that any data changed on the memory-disk is lost if the power fails. Normally the user would write the memory-disk back to a floppy disk when finished making modifications.
|
|
A CG system could also include 8" floppy diskette drives, a disk operating system for storing graphics images, and a version of Microsoft BASIC. These allowed the CG to be used as a standalone workstation, able to generate images without being connected to a host machine. Later enhancements included a Color Lookup Table and arithmetic processing unit.Computerworld - 1981 June 1 p57 "TUCKER, Ga. — Chromatics, Inc.
|
|
Friday the 13th: The Computer Game is the first game adaptation based on the films of the same name. It was released in 1985 by Domark for the Amstrad CPC, Commodore 64, and ZX Spectrum. The game was released on floppy diskette and cassette tape. The player's goal is to find and kill Jason, while making sure his friends or he himself are not killed by Jason.
|
|
The Macintosh's persistent storage medium was Sony's floppy diskette drive. This drive replaced the Apple ]['s Shugart drive and the 871K FileWare/"Twiggy" floppy drive used in the original Lisa as the storage medium chosen for the original Macintosh. The single-sided 3.5 inch floppy stored 400 KB by spinning the disk slower when the outer edge was used. A separate microcontroller, the IWM (Integrated Woz Machine), was dedicated to disk control.
|
|
The heat event was essential due to the limited number of computers provided for the final event. However, this change in the competition format did not eliminate the need for marking based on hand- written programs. In 1998, the heat event was replaced by a pre-competition assessment. All participants were asked to work on the pre-competition assessment task and submit a floppy diskette containing the source code and executable of their programs.
|
|
Both were fully integrated systems that included both hardware and software in one package. The 300/25 used Pertec floppy diskette drives and the 300/55 added Pertec DC-3000 14-inch hard disk. The system consists of the MITS 2nd generation Altair 8800 (or Altair 8800b) computer with hard drive controller and MITS datakeeper storage system. The complete 300/55 business system sold for $15,950 and included the Altair 8800b with 64k of dynamic RAM, a CRT terminal and a desk.
|
|
Computers, at the time, would default to booting from the A: diskette drive if it had a diskette. The virus was spread when a floppy diskette was accessed with an infected computer. That diskette was now, itself, a source for further spread of the virus. This was much like a recessive gene - difficult to eliminate - because a user could have any number of infected diskettes and yet not have their systems infected with the virus unless they inadvertently boot from an infected diskette.
|
|
The home computer would contain some circuit such as a phase-locked loop to convert audio tones back into digital data. Since consumer cassette recorders were not made for remote control, the user would have to manually operate the recorder in response to prompts from the computer. Random access to data on a cassette was impossible, since the entire tape would have to be searched to retrieve any particular item. A few manufacturers integrated a cassette tape drive or cassette-like tape mechanism into the console, but these variants were made obsolete by the reduction in cost of floppy diskette drives.
|
|
The CPT 8000 was the company's first microcomputer product, exhibited in spring of 1976. It was a self-contained desktop machine with two 8 inch floppy diskette drives, a movable keyboard, and a full-page vertically oriented CRT display with black characters on a white background, for a view of text on paper. It was promoted as familiar and easy to use for those experienced with typewriters. The CPT 8000 had dual-window editing, where text was assembled in an upper window from text entered at the keyboard or from one or more files brought successively into the lower window.
|
|
Some early CD-ROM drives used a mechanism where CDs had to be inserted into special cartridges or caddies, somewhat similar in appearance to a -inch micro floppy diskette. This was intended to protect the disc from accidental damage by enclosing it in a tougher plastic casing, but did not gain wide acceptance due to the additional cost and compatibility concerns—such drives would also inconveniently require "bare" discs to be manually inserted into an openable caddy before use. Ultra Density Optical (UDO), Magneto-optical drives, Universal Media Disc (UMD), DataPlay, Professional Disc, MiniDisc, Optical Disc Archive as well as early DVD-RAM and Blu-ray discs use optical disc cartridges.
|
|
It was founded by David S. Lee and Robert E. SchroederThe Startup Game: Inside the Partnership between Venture Capitalists and Entrepreneurs, William H. Draper III, St. Martin's Press, 1/4/2011, ASIN B004CYERLI, page 168 in 1973, grew to become the largest printer company in the world, and was acquired by ITT Corporation for an unprecedented $164M in 1978. It remained a division of ITT until its acquisition by Wyse Technology sometime before 1995. Qume also manufactured floppy diskette drives, particularly 5.25" ones, but it also manufactured 8" diskette drives as well. Qume's diskette drives were included in some IBM PC models, such as the Portable Personal Computer and PCjr.
|
|
It is the code in the MBR which generally understands disk partitioning, and in turn, is responsible for loading and running the VBR of whichever primary partition is set to boot (the active partition). The VBR then loads a second-stage bootloader from another location on the disk. Furthermore, whatever is stored in the first sector of a floppy diskette, USB device, hard disk or any other bootable storage device, is not required to immediately load any bootstrap code for an OS, if ever. The BIOS merely passes control to whatever exists there, as long as the sector meets the very simple qualification of having the boot record signature of 0x55, 0xAA in its last two bytes.
|
|
8-inch, -inch, and -inch floppy disks 8-inch, -inch (full height), and -inch drives A -inch floppy disk removed from its housing A floppy disk or floppy diskette (sometimes casually referred to as a floppy or diskette) 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. Floppy disks are read from and written to by a floppy disk drive (FDD). The first floppy disks, invented and made by IBM, had a disk diameter of . Subsequently and then inch (90 mm) became a ubiquitous form of data storage and transfer into the first years of the 21st century.
|
|
Stepper motors can be rotated to a specific angle in discrete steps with ease, and hence stepper motors are used for read/write head positioning in computer floppy diskette drives. They were used for the same purpose in pre-gigabyte era computer disk drives, where the precision and speed they offered was adequate for the correct positioning of the read/write head of a hard disk drive. As drive density increased, the precision and speed limitations of stepper motors made them obsolete for hard drives—the precision limitation made them unusable, and the speed limitation made them uncompetitive—thus newer hard disk drives use voice coil-based head actuator systems. (The term "voice coil" in this connection is historic; it refers to the structure in a typical (cone type) loudspeaker.
|
|
Since much of the low level formatting process can today only be performed at the factory, various drive manufacturers describe reinitialization software as LLF utilities on their web sites. Since users generally have no way to determine the difference between a complete LLF and reinitialization (they simply observe running the software results in a hard disk that must be high-level formatted), both the misinformed user and mixed signals from various drive manufacturers have perpetuated this error. Note: whatever possible misuse of such terms may exist (search hard drive manufacturers' web sites for all these terms), many sites do make such reinitialization utilities available (possibly as bootable floppy diskette or CD image files), to both overwrite every byte and check for damaged sectors on the hard disk. Reinitialization should include identifying (and sparing out if possible) any sectors which cannot be written to and read back from the drive, correctly.
|
|
Most commercial software using more than one disk side was shipped on such "flippy" disks as well. Only one side could be accessed at once, but it did essentially double the capacity of each floppy diskette, an important consideration especially in the early years when media was still quite expensive. In the Disk II, the full-height drive mechanism shipped inside a beige-painted metal case and connected to the controller card via a 20-pin ribbon cable; the controller card was plugged into one of the bus slots on the Apple's mainboard. The connector is very easy to misalign on the controller card, which will short out a certain IC in the drive; if later connected correctly, a drive damaged this way will delete data from any disk inserted into it as soon as it starts spinning, even write-protected disks such as those used to distribute commercial software.
|
|