Some important storage devices

HDD (Hard disk drive ) :
It is the most important storage device. It is made of metal coated with metallic oxide. It is available in different size in the market. for example 20 gb, 40gb, 80 gb etc. All necessary files in the computer system are saved in the Hard disk. It is also called c: drive or d: drive. It shows the capacity of any PC.

FDD (Floppy disk )
It is another storage device which has got less capacity to store the data than the HDD. It is made of plastic having 1.44 Mb of storage capacity. It is mostly used to transfer any data from one pc to another pc. It is also called a: drive. Sometimes it is used to boot the computer system.

Pen drive :
It looks like a pen. It's storage capacity is up to 20 GB now a days. It is easily to handle and transfer the data. It need USB port to plug in into the system.

Zip drive :
It is just like FD but it is bigger than it. It has got capacity to store 200-250 mb of data. It is mostly used in Publication, press etc.

CD ROM/DVD ROM :
It mostly used to copy any files from the system. It is also used to store any programs and data to the system. It's storage capacity is 700 mb but in DVD ROM its capacity is 4 Gb or more than that.