Day: March 4, 2010

A power supply unit is the component that supplies power to the other elements in a computer. More particularly, a power supply unit is typically planned to transform general-purpose alternating current electric power from the mains to working low-voltage DC power for the internal components of the computer.

The most usual computer power supplies are made to match to the ATX form factor. This enables particular power supplies to be interchangeable with distinctive components inside the computer.

ATX power supplies also are created to turn on and off using a indication from the motherboard, and supply assist for modern functions such as the standby mode available in most of the computers. The most recent specification of the ATX standard PSU as of mid-2008 is version 2.31.

Computer power delivers are rated based on their highest output power. Typical power ranges are from 300 W to 500 W lower than 300 W for small form factor systems and are intended for ordinary home computers. Power supplies used by gamers and enthusiasts mostly range from 450 W to 1400 W. Typical gaming PCs feature power supplies in the range of 500-800 W, with higher-end PCs demanding 800-1400 W supplies.

The top-end units are up to 2 kW strong and are created mainly for servers and, to a lesser degree, extreme performance computers with multiple processors, a few hard disks and multiple graphics cards. The power rating of a PC power supply is not officially certified and is self-claimed by each company. Power Supply Fundamentals:or How PSU Power Ratings Mean Almost Nothing A common way to reach the power figure for PC PSUs is by adding the power obtainable on each rail, which will not give a true power figure. Therefore it is possible to exceed a PSU on one rail without having to apply the maximum rated power.

There are many power supply in the markets such as 65 WATT power supply,100 WATT power supply,125 WATT power supply but before buying be sure of its power level.

We are now well into the digital age. Widespread use of computers and the Internet have made digital the medium of choice for almost everyone. Music, photography, movies and of course communications and data are all available, stored and produced in digital formats. Ease of distribution and portability, as well as the reduction in production costs makes digital an attractive proposition for everyone.

With the widespread use of digital information comes the increased risk of that data falling into the wrong hands, or even being stolen. Computer crime is an evil faced by all computer uses and businesses on a global scale. What makes digital so appealing to users on a personal and business scale unfortunately is what appeals to criminals and online fraudsters.

Computer criminals use the Internet as a playground, a delivery network for criminal activity. The devices used go further than the personal computer however, mobile phones and PDA’s are also used for such activity, and even humble MP3 players have been known to be used to store illegal data.

Digital forensics is the process of investigating and pertaining legal evidence from such digital devices. The forensic methods are used to recover deleted data, corrupted data or data that has been hidden using special file commands. A typical forensic examination of this nature will go far beyond traditional data recovery techniques and for the best results be carried out by a trained professional.

It is an important part of the forensic process to ensure that the data recovered is then kept secure and not tampered with – especially if it is to form part of a legal case. Digital forensic experts will always work on a copy of the original device or storage medium so as not to corrupt the original medium. A professional investigator should be able to produce a clear and concise report of all findings that can be used to prove the innocence or guilt of the accused.

Computer crime is evolving as fast as the technology available and so are the techniques being used to counter act it. This area of forensic science is constantly moving, new advanced techniques being developed to not only keep up with existing technology, but to also be ready for new devices that are hitting the market every day.

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The advancements in technology have given birth to great inventions such as the computer and the internet. With our very modern and hectic lives, we have overly benefited from using computers coupled with the internet.

However, there is a lot that we have to understand with these useful gadgets.

What we do not really know is that whenever we browse the internet and go to websites that require us to key in personal information is that our computer actually keeps tabs on these things and collects all those data and stores it in our hard disk.

Because we do not find these files in our desktops, we do not really know of such things.

And it does not stop there, our computers also store information that we save in our computers offline. Even if we try to delete these files from our recycle bins, a back up copy of the file is stored in our hard disk somewhere which is just waiting for someone to discover it.

I do not have to tell you how dangerous it is for information to fall into the wrong hands in this time and age. Identity theft has long been a growing problem.

If you are somebody who shares his computer with somebody else, you will have to do something to make sure that none of your personal information leaks out to other people.

The good side of things is that simple software can do the trick.

An evidence eraser program can scan your computer for files that you may not want to have lying around and effectively remove all these files so that you would no longer find any trace of the files that you do not want to keep. Such mechanism is even employed by the government.

Another aspect of evidence eraser is that it can empty several history folders that record out every move. It can remove files from our internet history and history of opened documents at the same time clean out the internet cache and temp files folder.

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Yahoo and Twitter have recently made a major announcement to inform their users that the search engine provider and social media site are going to be working together. For users of Yahoo and Twitter, this announcement means that you will be able to receive tweets from some of Yahoo’s most used sites, including the Yahoo home page. In addition to receiving the tweets, Twitter users will also have the ability to change their status, and post new tweets from the Yahoo sites.

In addition to the ability to access your Twitter account from Yahoo web sites, Yahoo will also incorporate tweets into their search engine results as well. The two companies have said that this partnership will begin right away, but it is expected to take several months for the changes to be fully implemented. Yahoo and Twitter users should expect to see all of these new features in place by the end of the year.

Yahoo and Twitter are attempting to compete with the Bing / Google collaboration announced at the end of 2009, and should help to keep Yahoo as a key player on the web. Yahoo has also signed a similar agreement with Facebook as well, so it will serve as a feed for both of these top social media sites.

Both Yahoo and Google upper management have refused to comment about the specifics of the deal, how much money was paid, or any other sort of compensation between the companies. Yahoo has previously stated that their deal with Facebook included no payments for at least the first five years of the deal, but there was no confirmation that Yahoo would have to make payments to Facebook after that.

Yahoo is well aware of the fact that Google is currently the most popular search engine on the web, and that their recent deal with Microsoft Bing, and the introduction of Buzz, is going to make it even more difficult for Yahoo to steal market share from Google. One of the strategies that Yahoo has adopted, in order to improve their search engine market share, is to partner with some of the most popular social networking sites, like Facebook and now Twitter. Facebook and Twitter both have millions of users, and if a percentage of these users switch to Yahoo, then the collaboration will be well worth it for the company. Only time will tell, however, how this strategy plays out.

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