what is ssd in computer

what is ssd in computer

SSD (Solid State Drive or Solid State Storage Device) 

Solid state storage devices are unique among today storage devices with no moving parts and devoid of any disks or tapes. Thus, Solid-state storage is neither magnetic nor optical. Rather, it utilizes integrated circuits to hold data. Some special solid-state storage (SSD) devices are nonvolatile, because they can retain their storage data even when the system’s power is turned off. Others are volatile, because if the constant supply of electricity is taken off then the data are lost not stored. The devices volatility depends on the type of memory circuits it uses.

Byte for byte, standard magnetic or optical storage is more cost effective and reliable than solid-state storage. How much speed of SSD? solid-state storage (SSD) devices have a big advantage than HDD (Hard Disk Drive) or other standard storage devices. Because Solid-State Memory devices have no moving parts, that's why they can move data in much less time than any other mechanical storage device. Another advantage of Solid State drive in terms of speed is that it already stores data electronically which is the way it is used by the CPU. Unlike standard devices, solid-state devices (SSD) do not need to move a head or sensor to search data or to convert it from magnetic or optical form into electronic form.

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