What is the pen drive?
Pen Drive is a portable universal serial serial bus (USB) Flash memory device for storing and transferring sound, video and data files from your computer. As long as the desktop computer or notebook has a USB port and PEN drive is compatible with the operating system, it should be easy to move data from the hard drive to the device - and to another computer - in minutes. The drive gets the name of the fact that many have a retractable port connector as a ball pen and are small enough to fit into the pocket. Other names include Flash Drive, Jump Drive and Palk.
How to use it
Using a pen unit is simple: the user inserts one end of the unit that is equipped with a USB connector, into a USB port on a desktop or laptop and activates it. Once the unit is active, the files can be dragged and dropped or copied and inserted into memory. The process is usually not more difficult than connecting files to e -mail or copying files to disk, MP3 player or other storagea device.
Today, several different computer operating systems are used, so most manufacturers configure their units on the pen to work with different systems. Before purchasing any portable storage device, the consumer should carefully read the package to make sure it works with its computer system. Often, users who own older operating systems can find compatible storage devices if these computers have a USB port.
How does it work
Technicians classify pen discs like no and , also called nand, device for storing data in the style of gate. This technology works more by storing data in blocks in blocks than randomly; As such, it does not work in the same way as the main memory systems of the computer-only for reading (ROM) and memory with random access (RAM) -ano. Using blocks rather than permission of random accessU allows DRIDO to store more information and be done at a lower price.
Transfer speed
The actual transmission speed depends on several factors, such as the computer speed when reading and writing to the device. Generally, the advertised speed of the pen drive is read speed because it is faster than the speed at which the data can be written. Manufacturers usually indicate speed in megabytes per second (MB/s). The age of the unit and the way in which it is used - for example, to write and erase small files - also affects transmission speed.
advantages
equipped with a large amount of memory, the pen drive is often considered to be improved both on older disk drives and more modern compact discs. They can transmit data much faster than these older technologies. Because it is a solid condition - there are no moving parts - Flash drives usually last longer and the data stored on them are safer. Depending on the size of the storage, Flasdisk H can hold anywhereli from 128 MB to 32 GB or more; For comparison, a standard CD-ROM holds about 700 MB of data.
Even a pen drive with a relatively low storage capacity tends to provide enough space for all different types of files. Any file that can be saved on your computer's hard disk can usually be copied to a flash drive if there is enough memory. There are also programs that can be started directly from the unit without being installed on the computer first.
restriction
pen units have several limitations, including how many times they can be used. Each unit has a limited number of program cycles (P/E Cycles), which is an act of inserting files per unit and erase. The device can usually pass 100,000 P/E cycles before the unit integrity is compromised and the files will be damaged.
Further restrictions concern the way manufacturers create equipment. NAND GATE style allows the user to program or read the data one byte or word at once but deletes datain blocks. If only a small amount is deleted, storage capacity is reduced.
NAND gate -style device can also cause data loss due to the way the information is accessible. Reading data in one cell can cause changes in the cells that surround them. In general, however, the user has to read the cell thousand times before this happens, and the rewriting of the surrounding cells can prevent this problem regularly.
Computer chip in the unit can also wear out, causing the device to work more slowly. The programming and deletion of files that are less than a block can also slow down the way of programming and erase files. As a result, the device can mean some blocks as bad, even if they are not entirely full; Attempting to read bad blocks and remap their speed can reduce the speed with which the device works.