Sunday, October 12, 2014

The hard disk (HD Hard Disk), also known as Hard drives also constitute a magnetic-based storage. H

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The computer programs and data stored in RAM during the processing time. The machine is switched off its contents will be lost. Stored outside the data processing time for various mass storage devices can be solved. IBM PC compatible computers displaying the most common storage in floppy (FD: Floppy Disk), respectively. Like almost everything else, this too big evolved. The flop today's 3.5 inches (1 inch = 2.54 cm, or inches) in diameter. These are generally useful storage capacity of 1.44 MB (1.37 MB). The plastic sheath with a flexible plastic sheet applied magnetic surface located. In magnetic-based storage are implemented. Today's record is all the data on both sides (DS: Double Side), and higher data density (HD: High Density) than previously used. The disk drive is required to read a (FDD FD Drive), which can be found on almost every PC. Should use the occasion of the first discs to reformat the need for storing data codes placed on the disk. Most of the pre-formatted floppies des already. If a disk you want to delete all your data, you can use the formatting of the disk files instead of deleting directories. des
The storage capacity of a floppy disk due to multiple disk devices have been developed, but none of them could become widespread des in general. One such alternative is the Zip drive, which is available in 250 and 750 MB capacity. The other solution is almost identical in size to the floppy. It is this: drive. The point is that in the traditional floppy drive can be inserted. Capacity of 120 MB.
The hard disk (HD Hard Disk), also known as Hard drives also constitute a magnetic-based storage. Here's the hard disks in a metal disc, which is located in a hermetically sealed unit. May be even more disk within a unit. The discs can write data to both sides. The high density des to be achieved by the pickup is much closer to the plate than the flopinál. The speed of the disc 5400, 7200 or 10000 ppm, i.e. rotation or velocity relative to the pickup des and the disc is more than 100 km / h. At this speed, achieved in that the head like a hovercraft hovering above the plate. The distance, however, is so small that an average of dust deep groove cut in the plate, if it were made between the disk and the head. A hard disk drive (HDD Hard Disk Drive) can not be opened because the dust can be fatal penetrating the surface of the disk, the data stored on it. In the same way, beware of the active driver shaking, ütögetésétől since then over the head ütődhet floating disc on the disc, and may cause permanent damage. The drives are designed to stop plate at the same time the head of a so-called parking position into the edge of the plate. In trying to protect against vibrations caused by delivery. A personal computer can be built in hard drive capacity is around 200-300 GB. The hard drive in your computer are recorded in fixed, des so the machine using this data can only be one installation to another computer. To solve this problem, created a tool called Mobile Rack, which is similar to an account stored in the drive, so the more easily removable and transportable.
Hard drives development of a "gem", developed by the IBM Microdrive introduced earlier. This disc is a large fémpénznyi. The driver of a semi-fit business card footprint, height 5mm. Now has a capacity up to 1 GB, but it is under development in the six-GB version. This connection of the drive is the same in terms of the CompactFlash memory expanders. Almost any PC can be found on the USB connector. The connected flash memory (memory stick) to the operating system, any new drives appear. The treatment program des from the hard drive in the same manner. des The magnetic-based storage prices for tape storage as well (streamer cassette). The advantage of a large storage capacity. Is there a 600 GB version. Typically used in some of the 10 GB versions of the most often. The disadvantage des of tape data storage, row by row to the data available, ie the random

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