An optical storage device is an electro-mechanical unit that can save and retrieve (write and read) information on a special disc medium using a laser light. Optical drives are designed to work with several types of media: CDs ("compact disc"), DVDs (digital versatile disc" or "digital video disc") and Blu-ray discs.
Disk storage devices are most commonly used in personal computers as a means to enhance memory. The most common are hard disk drives, optical disk drives, and even zip drives.
An optical storage device is an electro-mechanical unit that can save and retrieve (write and read) information on a special disc medium using a laser light. Optical drives are designed to work with several types of media: CDs ("compact disc"), DVDs (digital versatile disc" or "digital video disc") and Blu-ray discs.
Advantages of Electronic MediaAdvantages include large information storage capacity in small size and re usability (most of electronic media devices are reusable). Storage density and how many times it can be reused for storage will depend on the electronic media type.Electronic media (or storage devices) are of different types based on technique used for storing information. e.g. Flash memory based, Optical Storage (DVD, CD) or more traditional magnetic storage devices (floppy discs/storage tapes/hard disks)
There are many types of storage devices. Two examples of the most commonly used devices are the flash drive and the SD card.
Hard Drive
This is a very general question. There are many types of data storage devices, but the most common storage device that holds data instructions and information we think about today in the modern personal computer is the Hard Disk Device (HDD).The HDD is an example of a magnetic storage media. Other example are tape drives, and floppy disks. Other types of storage are Optical (CD's and DVD's) and solid state devices like flash drives.
The most popular secondary storage devices are hard disks, CDs, DVDs, USB Flash drive and floppy disks.
hard disk
In most cases same type of devices used for primary storage - hard drives.
UBS drives. the most i have ever used is an 8 GB. hope this helps
Optical mouse: Most desktop computer users today have some type of optical mouse, which uses devices that emit and sense light to detect the mouse's movement.