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  2. History of the floppy disk - Wikipedia

    en.wikipedia.org/wiki/History_of_the_floppy_disk

    By 1988, the 3 + 12-inch was outselling the 5 + 1 ⁄ 4-inch. [69] In South Africa, the 3 + 12-inch format was generally called a stiffy disk, to distinguish it from the flexible 5 + 1 ⁄ 4-inch format. [70] [71] The term "3 + 12-inch" or "3.5-inch" disk is and was rounded from the 90 mm actual dimension of one side of the ...

  3. History of IBM magnetic disk drives - Wikipedia

    en.wikipedia.org/wiki/History_of_IBM_magnetic...

    IBM manufactured magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. [1] [2] Both the hard disk drive (HDD) and floppy disk drive (FDD) were invented by IBM and as such IBM's employees were responsible for many of the innovations in these products and their technologies. [3]

  4. Floppy disk variants - Wikipedia

    en.wikipedia.org/wiki/Floppy_disk_variants

    A Maxell-branded 3-inch Compact Floppy Disk. The floppy disk is a data storage and transfer medium that was ubiquitous from the mid-1970s well into the 2000s. [1] Besides the 3½-inch and 5¼-inch formats used in IBM PC compatible systems, or the 8-inch format that preceded them, many proprietary floppy disk formats were developed, either using a different disk design or special layout and ...

  5. Floppy disk - Wikipedia

    en.wikipedia.org/wiki/Floppy_disk

    8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...

  6. List of floppy disk formats - Wikipedia

    en.wikipedia.org/wiki/List_of_floppy_disk_formats

    3 12 inch SHARP CE-1600F, CE-140F: 2 12 inch [2] [3] Single drive: 1, diskette: 2 16 8 512 2× 64 kB 270 GCR (4/5) Internally based on FDU-250 Micro Floppy Disk Drive Unit [2] Thomson: 5 1 ⁄ 4 inch Single 1 40 16 128 80 kB 300 FM Thomson UD90.070 Double 2 256 320 kB MFM Thomson DD90-320 [NB 17] 3 12 inch Double 1 80 16 256 320 ...

  7. Floppy disk format - Wikipedia

    en.wikipedia.org/wiki/Floppy_disk_format

    In the early 2000s, most floppy disk types and formats became obsolete, leaving the 3 + 12-inch disk, using an IBM PC compatible format of 1440 KB, as the only remaining popular format. Different floppy disk types had different recording characteristics, with varying magnetic coercivity (measured in oersteds , or in modern SI units in ...

  8. Tandon Corporation - Wikipedia

    en.wikipedia.org/wiki/Tandon_Corporation

    The Tandon Corporation was an American disk drive and PC manufacturer founded in 1975 (incorporated in 1976 as Tandon Magnetics Corp.) [1] by Sirjang Lal Tandon, a former mechanical engineer. [2] [3] The company originally produced magnetic recording read/write heads for the then-burgeoning floppy-drive market. Due to the labor-intensive nature ...

  9. Write protection - Wikipedia

    en.wikipedia.org/wiki/Write_protection

    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. 3 + 12-inch floppy disks have a sliding tab in a window on the right side (open ...