2010年7月30日星期五

The Usb Flash Drive Has Made The Floppy Drives Extinct

An usb flash drive is made of flash memory data storage device that is integrated with a USB 1.1 or 2 interface. These usb flash drives are removable and rewriteable. In size, they are smaller than the floppy disk and less in weight. The maximum storage capacity is 256 GB.

The purposes of usage of floppy drives have been substituted by usb flash drive. The main cause of preference over floppy drives has been their durability and reliability, portable nature and larger volume of data storage. Updated equipments have abandoned the floppy drive and are in favor of the USB ports.

A flash drive has a small printed circuit board and a USB connector that has been insulated electrically. The usb flash drives gather power from USB connections and hence the requirement of a battery is nullified. The usage of flash memory ensures lower costs and lower power consumptions.The technological advancement has ensured development of high-speed interfaces such as USB made semiconductor memory systems with accessed storage viable.

The usb flash drives were started to be sold commercially in 2000 by Trek Technology and Toshiba. IBMs usb flash drives launched in December, 2000 had storage capacity of 8 MB which was much higher than that of the capacity of a hard disk. Trek Technology sold their product under the brand name of Thumb Drive and IBM marketed their product as the DiskOnKey.

The internals of a typical usb flash drive include a USB connector, USB Mass storage controller device, Test Points, Flash Memory chip. Crystal oscillator, LED, a Write-protect switch and a Space for second flash memory chip.The four parts of a usb flash drive include  Male type-A USB Connector,air max 90, USB mass storage controller,jimmy choo schuhe, NAND flash memory chip, Crystal oscillator.

The additional components of an usb flash drive includes-Jumpers and test pins,replica uhren,LEDs,air max billig,Write protect switches,Unpopulated space,USB connector cover or cap,Transport aid.

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