compact disk
That depends on your definition, but it is a storage device, it stores material on a flash memory, solid state drive.
A flash memory device such as a USB or SD card or an SSD (Solid State Storage) device
The overall trend in secondary storage device is the migration from rotating magnetic discs to solid state storage. Solid state drives (SSD's) are however considerably more costly than older types of storage.
A solid state storage device uses solid-state memory to store data. They come in a number of different forms including hard drives, flash drives, camera SD cards, compact flash memory, etc.
Solid State Disks Hard Disk Drives are also secondary storage devices.
The overall trend in secondary storage device is the migration from rotating magnetic discs to solid state storage. Solid state drives (SSD's) are however considerably more costly than older types of storage.
solid state
A compact disk (CD) is an optical storage device.
Solid state backing storage, or backup storage, is a way of storing information that has no moving parts. The small, plug-in modules often called USB drives or thumb drives are a common example of this type of storage.
Flash memory is a term used for solid state devices. They are called solid state because they have no moving parts and the data is "flashed" to the device. Mobile phones use flash memory, USB storage devices or even large mass storage devices can be bought as solid state.
The hard disk drive, or a solid state drive in some computers.
flash memory,floppy disc,usb,pendrive,RAM,hardisk