Search results
Results From The WOW.Com Content Network
The first floppy disk was developed under the supervision of Alan Shugart in the late 1960s. The floppy disk was not introduced to the public until the 1970s by IBM. But, like any man-made product the floppy disk came with its pros and cons, such as it being cheap and portable while also having severely limited data storage. [citation needed]
Until about 2005, most desktop and laptop computers were supplied with floppy disk drives in addition to USB ports, but floppy disk drives became obsolete after widespread adoption of USB ports and the larger USB drive capacity compared to the "1.44 megabyte" 3.5-inch floppy disk. USB flash drives use the USB mass storage device class standard ...
The USB mass storage device class (also known as USB MSC or UMS) is a set of computing communications protocols, specifically a USB Device Class, defined by the USB Implementers Forum that makes a USB device accessible to a host computing device and enables file transfers between the host and the USB device. To a host, the USB device acts as an ...
WORM drives preceded the invention of the CD-R, DVD-R and BD-R.An example was the IBM 3363. [1] These drives typically used either a 5.1 in (13 cm) or a 12 in (30 cm) disc in a cartridge, with an ablative optical layer that could be written to only once, and were often used in places like libraries that needed to store large amounts of data.
This removable-disk drive was quiet in operation and incorporated several notable features: The SCSI identity could be altered with a screwdriver. A recessed control located under the unit allowed one of four settings (0, 4, 5 or 6). The Orb had a protective cover over the front of the unit, completely encasing the data disk.
The KryoFlux controller plugs into a standard USB port, and allows normal PC floppy disk drives to be plugged into it. Because the device operates on data bits at the lowest possible level with very precise timing resolution, it allows modern PCs to read, decode and write floppy disks that use practically any data format or method of copy ...
CD-ROMs are the most common forms of media used, but other media, such as magnetic or paper tape drives, ZIP drives, and more recently USB flash drives can be used. The computer's BIOS must support booting from the device in question. One can make one's own boot disk (typically done to prepare for when the system won't start properly). [2]
Density is a measure of the quantity of information bits that can be stored on a given physical space of a computer storage medium.There are three types of density: length (linear density) of track, area of the surface (areal density), or in a given volume (volumetric density).