Picture of Hard Disk Drive (HDD)
Hard Disk Drive is the part of computer hardware.Its an storage device or secondary storage device also known by the name of magnetic disk , HD Drive , Fixed Disk , nonvolatile memory (NVM).Nonvolatile means information will permanently stored as long as power is supplied by supplier.
What is the purpose of Hard Disk Drive (HDD):
Hard Disk Drive is used to store your data.You can save your information , multimedia files , important programs , Pictures and many more.Most important purpose of Hard Disk Drive is to run computer properly by the Installation of Operating System on HDD.
Capacity of Hard Disk Drive (HDD):
In the category of Storage Devices Hard Disk Drive is one of the largest information or data storing device.As we know Bit is the smallest storage component in computer world.Eight 8 Bits combine together to form 1 bytes.
1 Bit =______________ 0 or 1 Either it is yes or no
1 Byte (B) =__________ 8 bits
1 kilobyte (KB) =_____.. 1024 bytes
1 megabyte (MB) =___._1024 kilobytes
1 Gigabyte (GB) =_____ 1024 megabytes
1 Terabyte (TB) =_____. 1024 Gigabytes
Terabyte is enough storage for home use Pc's.More Terms were created after Terabyte like petabyte , exabyte , zettabyte etc.
2011 hard disk drive information:
4 terabyte Hard Disk Drive was developed in 2011.
4 terabyte (TB) = 4096 Gigabyte (GB) 
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