What Is A Hard Drive?

A hard drive is an essential piece of hardware for every computer, it actual name is Hard Disk Drive (HDD), other more common names are hard disk and fixed disk. A hard drive is a non-volatile data storage device; using two rotating disks, known as platters, that have magnetic surfaces, the hard drive digitally stores encoded data. While modern day Hard drives are a completely sealed unit (aside from the ventilation hole), the original hard drives had removable media. The term “Hard” was meant to be a substitute, temporary slang, for the term “rigid” before a universal name had been agreed upon. A rigid-disk drive is a hard drive essentially, but that name is rarely used.

Hard Drives were first introduced for data storage in an accounting computer in 1956 and were developed for general purpose computers. Non-volatile storage means that unlike RAM, which is volatile memory, the information will not be deleted when the computer is powered off. The hard drive is where firmware and program files, along with other types of information, are stored so it can be accessed at any time.

The data is stored in the computer language known as binary code; information is recorded as a series of zeros and ones and is retrieved by detecting the magnetized material. Covered in a thin layer of magnetic material, the platters themselves are non-magnetic usually made of aluminum or glass. Earlier hard drives used iron oxide for the magnetic material, but now a cobalt-based alloy is used.

A typical hard drive for a desktop computer holds somewhere between 120 and 500 GB of digital data, rotate at 7200 RPM (Rotations Per Minute) and transfers 1 Gbit per second. As of July 2008 the largest capacity of a hard drive became 1.5 TB, with an RPM of 10 thousand or 15 thousand and has a transfer rate of 1.6 Gbit per second. Hard drives with RPMs of at least 10 thousand are the gamers’ choice for their computers because of the high data transfer rate, which cuts down on the game start up time and decreases game loading time.

Modern day hard drives cover a variety of digital applications, such as video recorders, audio players, personal assistants, cameras and video games consoles. Samsung and Nokia added hard drives to their phones for the first time in 2005 and revolutionized the market. The size of the hard drive stays the same, but the amount of data that can be stored upon them is ever increasing because of data compression research. The original hard disk drive held 4.4 megabytes (MB) of digital data as compared to the newest hard drive today that can hold up to the 3 terabytes (TB) of digital data. (1 thousand bytes = 1 MB; 1 thousand MB = 1 gigabyte (GB); 1 thousand GB = 1 TB) The 3 TB hard drives are not yet available for public purchase but the 2 TB external hard drives are, and they sell for a minimum of $ 454.

Victor Epand is an expert consultant for computer memory, PC supplies, and computer games. When shopping, we recommend the best online stores for PC supplies, Hard Drives, computer memory, RAM, and used computer games.

Easy To Follow Ideas About Search Engine Optimization That Will Really Help You


You could be the most ambitious person on the planet when it comes to creating a website with all the bells and whistles that people will love, but unless your visitors can find your site when they search specific terms, your efforts are just going to be wasted. Read these tips and make the most of your efforts.


On your website, headings are going to play a vital role in organizing information. So you need to use only a single H1 tag when you are putting your page together. You can use various subheading tags, like H2-H6, but keep things neat and clean by only using one main H1 tag.


To search engine optimize your website, don't include more than 150 internal linking hyperlinks on your home page. Too many internal links on one page can dilute a web page's search engine rank. Huge numbers of links also make it hard for visitors to find the information that they need quickly.


To ensure that your website is as easy as possible to crawl, keep your site architecture flat. Don't use too many sub folders, instead use descriptive names for each page. Keep your pages with the most competitive keywords in their names, close to the root folder, so they will gain a higher page rank.


A great way to optimize your search engine is to provide use internal links. This means you have an easy access to links within your own site. This provides an easier database for customers of viewers to use and will end up boosting the amount of traffic you have.


Find some SEO forums that take site review requests. Participate in the forums then ask fellow members to take look at your website. When someone you don't know well visits your website they can analyze it critically and unemotional, then highlight mistakes and suggest ways for you to improve your website's search engine optimization.


While purchasing a domain name may seem like the right way to go, many search engines do not recommend it. Some search engines have a long delay for adding new sites to their existing lists, and last thing you want is to delay getting new visitors. Using your existing website is more feasible, since the wait time for some engines is up to a full year.


Decide whether or not you want to use a link farm. Link farms are sites without content that just have thousands of links. This is generally seen as a negative thing. However, these do appear in search engines, and can help you rise in the ranks. It is your decision as to what is most important: rapport with other sites, or search engine rankings.


As mentioned at the start of this article, it's very important that you do not allow your efforts to go to waste. Learning the proper optimization tactics for the search engines out there is how your site or business goes from a simple start-up to being a legitimate and popular brand online. Use the tips you've just read to your advantage in SEO.


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