The type of Storage Devices
The various types of storage devices used in personal computers are:
Floppy Disk Drives (FDD)
Hard Disk Drives (HDD)
Optical Drives
Tape Drives
Solid State Storage devices
Floppy Disk Drives (FDD)
FDD is a personal computer storage device that reads data from, and writes data to, removable disks made of flexible Mylar plastic covered with a magnetic coating and enclosed in a stiff, protective, plastic case.
Front view 3.5-inch floppy disk drive 
Hard Disk Drives (HDD)
HDD is a personal computer storage device that uses fixed media, which means that the disk is built into the drive and
the drives are not removed from the computer unless you are performing an upgrade or a repair. 
Optical Disks
An optical disk is a personal computer storage device that stores data optically, rather than magnetically. 
Optical disks and drives come in several types, such as:
CD-ROM
CD-R
CD-RW
DVD-ROM
DVD-R DVD+R
DVD+R DL
DVD-RW DVD+RW DVD-RAM 
Tape Drives
A tape drive is a personal computer storage device that
stores data magnetically on a removable tape that is enclosed in a tape cartridge. 
Solid State Storage
Solid state storage is a personal computer storage device
that stores data in special types of memory instead of on disks or tape.
The System Board Form Factors
The form factor describes the size and shape of the system board.
Common System Boards are:
-Full size AT
-Baby AT
-ATX
-microATX
-LPX NLX BTX
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