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  2. Macintosh External Disk Drive - Wikipedia

    en.wikipedia.org/wiki/Macintosh_External_Disk_Drive

    Apple's Hard Disk 20 can accommodate an additional daisy-chained hard drive as well as an external floppy disk. 3.5-inch single-sided floppies had been used on several microcomputers and synthesizers in the early 1980s, including the Hewlett Packard 150 and various MSX computers. The standard on all of these was MFM with 80 tracks and 9 sectors ...

  3. 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 ...

  4. Tandy 1400 LT - Wikipedia

    en.wikipedia.org/wiki/Tandy_1400_LT

    The 1400LT (catalog number 25-3500) had two 3.5 inch floppy diskettes with a capacity of 720 KB each. The processor was the Intel 8088–compatible NEC V20, with a clock speed of 7.16 MHz or 4.77 MHZ for compatibility with IBM PC programs.

  5. List of disk drive form factors - Wikipedia

    en.wikipedia.org/wiki/List_of_disk_drive_form...

    [citation needed] With increasing sales of microcomputers having built in floppy-disk drives (FDDs), HDDs that would fit to the FDD mountings became desirable. Thus HDD Form factors, initially followed those of 8-inch, 5.25-inch, and 3.5-inch floppy disk drives. Because there were no smaller floppy disk drives, smaller HDD form factors ...

  6. 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 ...

  7. List of floppy disk formats - Wikipedia

    en.wikipedia.org/wiki/List_of_floppy_disk_formats

    3 inch Double 1 40 9 512 180 kB 300 MFM Single head drive, but double-sided floppy discs (total of 360 kB per floppy) Amstrad PCW8512/9512: 3 inch Double 2 80 9 512 720 kB 300 MFM 720 kB mode uses both sides - ensure disc inserted correct way up. Apple II: 5 1 ⁄ 4 inch Double 1 35 13 256 soft 113.75 kB 300 GCR [NB 2] 1 16 140 kB 3 1 ⁄ 2 ...

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