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Transcript of Storage Devices
Definition: technology used to retain (keep) digital data (information). It is a main function and fundamental component of computers.
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There are many different kinds of storage devices.
Some are internal which means they are located inside of your computer. An example would be your computer's hard drive. Hard drives can hold a lot of information.
Some are external which can be plugged into your computer when needed. An example would be a CD or flash drive.
USB-Also known as a flash drive or memory stick, this technology plugs into the USB port on your computer. It is portable and can be removed to be used on different machines. Flash drives have no moving parts or areas which scratch which make them very durable. A variety of files can be saved on flash drives like music, pictures, documents, videos, etc.
CDs- Also known as a compact disk, this technology is used to save a variety of files.It was originally developed to store and play back sound recordings only, but the format was later adapted for storage of data. There are a variety of different CDs. CD-Rs can only be recorded or saved to one time. Rewritable (CD-RW) disks can be over and over. Other CDs have specific purposes... video Compact Discs (VCD), Super Video Compact Discs (SVCD), PhotoCD, PictureCD, CD-i, and Enhanced CD. CDs are inexpensive but can be easily damaged if scratched.
DVDs- DVDs offer higher storage capacity than Compact Discs while having the same physical size. DVDs are often mass produced. The data can only be read and not written or erased. Blank recordable DVDs (DVD+R) can be recorded once using a DVD recorder. The disk then can't be recorded on again or erased. Most DVDs are used for video recording but can contain other data/information as well. Blank DVDs are inexpensive but can be easily scratched or damaged.
SD Cards- Secured Digital cards are small portable devices used to save a variety of data. They are commonly used as a "bridge media" that can store data and be moved between different products. Developed by high tech companies such as Panasonic, SanDisk and Toshiba, they are commonly used as storage or memory cards for digital cameras, mp3 players, camcorders, phones, and notebook computers. SD cards have become commonplace within the electronic device community and are a popular method of storing data on most digital cameras. SD cards can be expensive and their small size makes they easy to lose.
Hard Drives- A hard disk drive is a device for storing and retrieving digital information, primarily computer data. It consists of one or more rigid (hence "hard") rapidly rotating discs (platters) coated with magnetic material, and with magnetic heads arranged to write data to the surfaces and read it from them.
Hard drives are located inside computers (unless it is a external hard drive) but can be removed and replaced. Computers use hard drives to store long term data like operating systems or saved documents.