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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 ...
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.
The IBM Diskette General Information Manual (PDF). Product Reference Literature (Fifth ed.). IBM. August 1979. "RX02 8 inch Floppy Drive Information". David Gesswein "8 inch floppy disks". University of Amsterdam. Archived from the original on July 2, 2016
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 ...
KryoFlux consists of a small hardware device, [4] [5] which is a software-programmable FDC system that runs on small ARM-based devices that connects to a floppy disk drive and a host PC over USB, and software for accessing the device. KryoFlux reads "flux transitions" from floppy disks at a very fine resolution. [6]
“We were setting up Office 95 installed off floppy disks, 3-1/4-inch box of 50 diskettes,” he said. “We had to basically load all the software manually.” Director of information technology
The original disk cartridges came in capacities of 5, 10, and 20 MB; they are 8.23 x 11.02 x 0.71 inches, [1] about the size of a standard piece of letter paper but thicker. The most popular system was the Bernoulli Box II, whose disk cases are 13.6 cm wide, 14 cm long and 0.9 cm thick, somewhat resembling a 5¼-inch standard floppy disk.
And if you built a plane 20 or 30 or even 40 years ago, you would use a floppy disk to get information in and out of some of the avionics of that airplane."Persky sells about 500 disks a daybut ...