What is a hard drive?

Fixed state (SSD) is a memory device without moving parts that can be used instead of a traditional hard drive. The fixed disk has several advantages and only one real disadvantage: costs. However, as the costs continue to fall, experts predict the firm disks in a firm state will replace discs controlled by plates in many applications by 2009. Flash -based Flash means that he uses flash technology to delete memory blocks before writing. Therefore, firm disks are also called flash drives . Danger means that the disk does not require the power to maintain its content. In other words, the data is not lost when the power supply is cut.

There are many advantages on a firm disk. It is much faster than a traditional hard disk, more robust, can withstand wider temperature fluctuations in the environment, not shake, is absolutely quiet, lighter and uses very Little Power. All these functions are combined to make a firm disk ideal for portable keyboards or memory sticks, mobile telephoneThey, PDA and other small devices.

As the production costs decrease, a fixed disk is also planned to become a disk for laptops. Fixed notebooks would be faster and lighter, with a significant increase in battery life. These larger disks are sometimes called nand disks (no A), compared to smaller or (no or) discs used in mobile phones, PDA and other devices. nand and nor Specify different architectures on how they delete, read and write down the discs.

Fixed disks have a limited life based on greased cycles . The first device had about one million greased cycles before failure. Some later technologies have introduced built -in routines that prolong the life of monitoring cell use to map data of less used cells. This allows the device to see the entire life cycle by wearing evenly.Otherwise, the data entered in the same cells can lead to premature failure again and again.

While the firm disk is more expensive than the traditional hard drive, it is also highly portable and much more flexible. Keydives, digital cameras and camcorders, MP3 players, mobile phones, PDAs and many other digital devices revolutionized personal electronics using disk in fixed condition.