Category: floppy

THE 3½ INCH FLOPPY

early 720k 3.5 floppy

The smaller 3½ inch floppy surfaced on a HP-150 desktop machine in late 1983. A consortium of some 21 companies all got together to make a standard that everyone could agree to. The floppy drive was single sided but the small size was notable. The standard 5¼ inch 360KB floppy seen on the IBM PC …

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FLOPPY DISKS

450px-Floppy_disk_2009_G1

The original DA400 provided only 80.6K when formatted with 128 byte sectors and 89.6K when formatted with 256 byte sectors. The Tandon floppy disk on the PC used 256 byte sectors and it held 160K on each side of the diskette. The PC diskette is termed double density as it is double the capacity of …

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