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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 ...
However, what Nakamatsu patented in 1952 was a paper for optical sound player. [12] In contrast to a floppy disk, this Nakamatsu patent discloses the use of printed paper for storage instead of the magnetic material of a floppy disk. It is not rewritable and lacks most elements of the IBM floppy disk patent.
Drawings from IBM Floppy Disk Drive Patents. IBM's decision in the late 1960s to use semiconductor memory as the writeable control store for future systems and control units created a requirement for an inexpensive and reliable read only device and associated medium to store and ship the control store's microprogram and at system power on to load the microprogram into the control store.
Early machines such as the Commodore 64 were tape-based, and hence had their games distributed on ordinary cassettes.When more advanced machines moved to floppy disks, the cassette boxes stayed in use for a while (e.g. Treasure Island Dizzy for the Amiga came on a floppy disk in a cassette box).
Floppy disks flop for the last time You can officially move your old computer floppy disks to your obsolete file, since Sony has announced plans to discontinue selling them in Japan in March 2011 ...
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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 ...
As we alarmingly learned in 2014, the US military has been using 8-inch floppy disks in an antiquated '70s computer to receive nuclear launch orders from the President. Now, the US strategic ...