In a PC computer the first drive is called A: drive and the second drive is called B: drive. Floppy Disk Drives have drive select jumpers on them that configure the drives as either first or second drive. The floppy drive interface can control two drives and the interface cable has two sets of control signals - one for each drive. 5.25 inch drives use an edge connector on the drive and the 3.5 inch floppies use a 34 pin header (pin) plug. The image at the right shows a typical direct drive motor that rotates the floppy disk media.įloppy Disk Drives require an interface circuit to interface them to the computer bus and the "standard" interface uses a 34 wire ribbon cable. An alignment of the head assembly can be performed with the aid of digital alignment disk but is not usually cost effective. A magnetic head assembly is moved back and forth across the surface of the disk by a stepper motor and must be aligned to very close tolerances in relation to the centre of rotation of the floppy disk. The Floppy Disk is rotated at 300 RPM for normal disks (DD) and 360 RPM for high density disks (HD). While floppy disk drives still have some limited uses, especially with legacy industrial computer equipment, they have been superseded by data storage methods with much greater data storage capacity and data transfer speed, such as USB flash drives, memory cards, optical discs, and storage available through local computer networks and cloud storage.Floppy Disk Formats Phil Storrs PC Hardware book DOS Computers and floppy disk drives Floppy Disk Drive Mechanics. Some individuals and organizations continue to use older equipment to read or transfer data from floppy disks.įloppy disks were so common in late 20th-century culture that many electronic and software programs continue to use save icons that look like floppy disks well into the 21st century, as a form of skeuomorphic design. USB drives for 5¼-inch, 8-inch, and other-size floppy disks are rare to non-existent. 3½-inch floppy disks can still be used with an external USB floppy disk drive. Subsequently, the 5¼-inch and then the 3½-inch became a ubiquitous form of data storage and transfer into the first years of the 21st century. The first floppy disks, invented and made by IBM, had a disk diameter of 8 inches (203.2 mm). 8-inch, 5 + 1 ⁄ 4-inch, and 3 + 1 ⁄ 2-inch floppy disks 8-inch, 5 + 1 ⁄ 4-inch (full height), and 3 + 1 ⁄ 2-inch drives A 3 + 1 ⁄ 2-inch floppy disk removed from its housing
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |