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Computer Storage Devices

What are Storage devices?

Storage Devices are mainly used in the computers to store the data like documents, files, music files, movies and etc. Without a storage device, your computer would not be able to save any information. There are many types of data storage devices. Some of them are removable data Storage Devices and the others are non removable data Storage Devices.

Storage Devices

Types of computer storage

The following are some additional examples of types of storage devices used with computers.

Magnetic storage devices:

Today, magnetic storage is one of the most common types of storage used with computers and it is the technology that is used in computer hard drives.

Floppy disk drive :

A Floppy Disk Drive, or FDD is a computer disk drive that enables a user to save data to removable disks. Although 8" disk drives were first made available in 1971, the first real disk drives used were the 5 1/4" floppy disk drives, which were later replaced with 3 1/2" floppy disk drives. Today, because of the limited capacity and reliability of floppy disks many computers no longer come equipped with floppy disk drives and are being replaced with CD-R, other writable discs, and flash drives.

Floppy Disk Drive
Hard drive

A hard disk drive or HDD is a data storage device. The hard disk was first introduced on September 13, 1956 and consists of one or more platters inside of an air sealed casing. Internal hard disks reside in a drive bay and connect to the motherboard using an ATA, SCSI, or SATA cable, and are powered by a connection to the PSU (power supply unit).

Hard disk drive
Optical storage devices

Another common storage is optical storage, which uses lasers and lights as its method of reading and writing data.

Blu-Ray disc:
Blu-Ray disc is an optical disc jointly developed by thirteen consumer electronics and PC companies such as Dell, Hitachi, Hewlett Packard, LG, Mitsubishi, Panasonic, Sony, and TDK. The Blu-ray was first announced and introduced at the 2006 CES on January 4, 2006 and is capable of storing up to 25 GB on a single-layer disc and 50 GB on a dual-layer disc, each disc being the same size as a standard CD.


CD-ROM disc:
Compact Disc -Read Only Memory, a CD-ROM is an optical disc whose memory is read only. A CD-ROM Drive is the device used to read them. CD-ROM drives have speeds ranging from 1x all the way up to 72x, meaning it reads the CD roughly 72 times faster than the 1x version. As you would imagine, these drives are capable playing audio CDs and reading data CDs.

Flash memory devices

Today, flash memory has started replacing magnetic media as it becomes cheaper and more efficient solution.

Flash drive

USB flash drive or jump drive is a portable drive only contains an integrated circuit memory board capable of storing information and has no movable parts. Flash drives are available in sizes such as 256MB, 512MB, 1GB, 5GB, and 16GB and are an easy way to transfer and store information.

Memory card:
A memory card is a type of storage media that is most commonly used in digital cameras, digital camcorders, handheld computers, MP3 players, PDAs, cell phones,game consoles, and printers, to store pictures, videos, music, and other data.

Types of computer memory cards

  • Compact Flash (CF)
  • Micro SD
  • MMC
  • SD Card
  • SDHC Card
  • SmartMedia Card
  • Sony Memory Stick
  • xD-Picture Card

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