A hard drive is an essential part of the hardware for each computer, is actually the name of Hard Disk Drive (HDD), other names are the most common hard disk and hard drive. A hard drive is a non-volatile data storage, with two rotating discs, as the dishes are known to have magnetic surfaces, the hard drive stores digitally encoded data. While the hard drives of today are a completely sealed unit (except for the ventilation holes), the original hard disk had a removable media. The term "hard" wasis a substitute, temporary slang, the term "rigid", before a general name, agreed. A hard disk is, in substance, but the name is used only rarely.
The disks have been introduced for storing data in an accounting computer in 1956 and for general-purpose computers have been developed. Non-volatile memory means that, unlike RAM, which is volatile memory, the data are not erased when the computer is off will be. The hard drive is whereFirmware and program files are stored together with other types of information, you can access at any time.
The dates are stored in the computer language, such as a binary code, the information is recorded as a series of zeroes and ones and is available through the detection of magnetized material. Covered with a thin layer of magnetic material, the non-magnetic plates themselves usually aluminum or glass. Previous discs used for the magnetic material of iron oxide, but now oneCobalt-based alloy is used.
A typical hard disk of a desktop computer somewhere has 120-500 GB of digital data, rotate at 7200 rpm (revolutions per minute), the 1 Gb per second. Since July 2008, the largest hard drive capacity has been a 1.5 TB at a rate of 10 thousand and 15 thousand and a transfer rate of 1.6 Gbit per second. RPM drive with at least 10 thousand have the choice of the player to their computer, because the high rate of data transferThe cost to start playing the game and reduces the load time cut time.
Modern Hard days include a variety of digital applications such as video recorders, audio players have personal assistants, cameras and game consoles. Samsung and Nokia, records of their phone for the first time in 2005 and revolutionized the market. The size of the disk remains the same, but the amount of data stored on them is increasing because of data compressionResearch. The original disc instead of 4.4 megabytes (MB) of digital data in comparison to the hard drive that later can still hold more than 3 terabytes (TB) of digital data. (1 thousand bytes = 1 MB, 1 thousand MB = 1 gigabyte (GB), 1 thousand GB = 1 TB) 3-GB hard drives are not yet available for purchase to the public, but the 2 TB Hard Drives , and sell them for a minimum of $ 454
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