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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 ...
Floppy disks remained a popular medium for nearly 40 years, but their use was declining by the mid- to late 1990s. [4] After 2000, floppy disks were increasingly rare and used primarily with older hardware, especially with legacy industrial and musical equipment. [5] Sony manufactured its last new floppy disks in 2011. [6]
An IBM spokesman, Mac Jeffery, confirmed that the company did license some of his patents, but said that they were not for the floppy disk, which he said IBM invented on its own. [28] Another IBM spokesman, Brian Doyle, said that the company licensed 14 patents from Nakamatsu and those patents do not have anything to do with the floppy disk.
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 ...
The 21 MB Floptical 3 + 1 ⁄ 2-inch disk. Floptical refers to a type of floppy disk drive that combines magnetic and optical technologies to store data on media similar to standard 3 + 1 ⁄ 2-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 ...
Double density (DD) 3½-inch disks use an iron oxide coating, just as with 5¼-inch DD/QD disks. However, drives utilize stronger 670-oersted write heads and a narrower track width of 0.115 mm (0.0045 in) for a density of 135 tpi and 8,717 bpi. High density (HD) 3½-inch disks switch to a cobalt disk coating, just as with 5¼-inch HD disks ...
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A commercially-made floppy disk "notcher" In computer science, a double-sided disk is a disk of which both sides are used to store data. Early floppy disks only used one surface for recording. The term single-sided disk was not common until the introduction of the double-sided disk, which offered double the capacity in the same physical size. [1]