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English: Diagram illustrating the basic internal parts of a 3.5" floppy disk. Document labels rendered as numbers to aid in internationalization. Note: The unlabeled square in the upper left is the approximate location of the write protection tab.
The cable is normally a ribbon cable. For IBM-compatible floppy controllers, a twist in the cable reverses the order of conductors 10 through 16 for the second connector. This allows two drives connected to the same cable to be addressed by the host controller without having to select drive assignments with jumpers on the drives themselves ...
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This work has been released into the public domain by its author, Fastfission.This applies worldwide. In some countries this may not be legally possible; if so: Fastfission grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Rear side of 3.5-inch floppy drive. Berg connector for power is shown on the left; data cable on right. Berg connector is a brand of electrical connector used in computer hardware. Berg connectors are manufactured by Berg Electronics Corporation of St. Louis, Missouri, now part of Amphenol.
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 ...
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However, the unshielded cable can sometimes be susceptible to high levels of noise. Like a floppy drive interface, ST-506 moves the drive head one track at a time with a timed pulse, which cannot occur faster than the stepper motor can move the head. The ST-412 disk drive, among other improvements, added buffered seek capability to the interface.