HDD
Hard Dives is the main storage space inside the PC. It is a permanent storage component unlike the RAM (Random Access Memory). It is possible for the computer to function without a hard disk, however it would be basically useless to you as you would not be able to use an Operating system or have any programs to use. Unless you had another form of mass storage device such as an SSD (Solid State Drive).
Function of hdd
One of the most necessary parts of a computer is the hard drive. Besides storing digital information, hard disk drives also contain all of a computer's operating data, including the operating system. In configurations with multiple hard drives, they are also useful in backing up data for archival purposes. Furthermore, a hard disk is a device that is used to store large amounts of data in a computer system. Hard disks differ from other memory because they are non-volatile, they retain the data even when they do not have power, and you can save your files on the hard disk as an external hard drive, and it works to provide storage. So all of the data displayed on a computer, including pictures, music, video and text, are stored on the hard drive. Additionally, the applications that display this content and allow users to modify it are themselves stored on the hard drive. For this reason, larger hard drives are always desirable, and new generations of PCs are expected to contain larger storage capacities.
CROSSING THE BEST HDD
There are 4 connections for a hard disk, and they are, IDE (or ATA) SCSI, Serial ATA and USB. However, The most common is the IDE interface. This provides an 80 pin connection to most standard motherboards and you can't normally go wrong buying an IDE drive for your machine. SCSI connections often require extra hardware unless its built into your motherboard. SCSI hard disks are often faster but more expensive than there IDE counterparts. Serial ATA does away with parallel data transfer which has its problem of large wires and electrical interference. The Serial ATA standard is more reliable and uses smaller un-obtrusive wires. Smaller wires also means better air flow for your case. Serial ATA hard drives can also work faster at a higher data throughput giving your overall system a speed boost. The final connection type is the USB (Universal Serial Bus) connection. This connection is used for connecting external hard drives to your machine. While not as fast as the internal Serial ATA connection, it has the usefulness of being able to disconnect easily from the PC and taken to another PC and plugged straight in. Perfect for storing a lot of files to be used on multiple computers.
Summery
In this stage i have wrote about HDD which is hard
disc devise, and it's the main devise in the computer. the mechanism that reads
and writes data on a hard disk. Hard disk drives (HDDs) for PCs generally have seek
times of about 12 milliseconds or less. Many disk drives improve their
performance through a technique called caching.
Reference
Dennis Hartman, (n.d). What Are the Functions of Hard Drives?. Retrieved
From, http://www.ehow.com/about_5184975_functions-hard-drives_.html
Function of hard devise, (n.d) retrieved from, http://wiki.answers.com/Q/What_are_Parts_of_hard_disk_and_their_function#slide=2
What is hard divise, (n.d). Retrieved from, http://www.pantherproducts.co.uk/index.php?pageid=whatisharddisk
From, http://www.ehow.com/about_5184975_functions-hard-drives_.html
Function of hard devise, (n.d) retrieved from, http://wiki.answers.com/Q/What_are_Parts_of_hard_disk_and_their_function#slide=2
What is hard divise, (n.d). Retrieved from, http://www.pantherproducts.co.uk/index.php?pageid=whatisharddisk