Computer power supplies take the high (110V or 220V) DC voltages from an electrical outlet and convert it to the various lower AC voltages required for a system to operate. The typical voltages required inside a computer are 3.3V, 5V, and 12V, where the 3.3V and 5V lines are generally used to power circuitry, and the 12V line provides power to run items such as hard drives, optical drives, and cooling fans.
Power supplies are sold in terms of their total power output, in terms of wattage. Choosing the correct power supply means not only finding one that will provide enough power for all of the components connected to the system, but also one that is the correct size physically, has enough connections for typical drives and fans, and if necessary, that also has special connections for things such as Serial ATA drives and modern video cards.
Choosing a power supply with enough power shouldn’t be much of a problem, as having more power than you need is never a bad thing. Just because a power supply is rated for 400W, or perhaps 600W, does not imply that it is drawing that at any given time. It just indicates the total power available to the various lines inside the computer. For those interested in getting a good idea of their minimum power requirements, this Power Wattage Calculator is a convenient reference. In addition to checking out the total wattage of a power supply, looking for strong amperage ratings on the 3.3V, 5V, and 12V lines is also recommended, as power supplies with identical total power ratings may distribute the power to the various lines in different quantities.
Power supplies come in a few different physical sizes, but the most common are designed to fit the standard ATX and micro ATX (mATX) form factor cases. A typical ATX power supply, measures 3.25″ x 6″ x 5.5″ and features two cooling fans to not only cool the power supply, but to also help draw hot air out of the computer. A typical mATX power supply, such as this A-Power 320W unit, measures 2.5″ x 5″ x 4″ and due to the smaller size features just one cooling fan. mATX cases are generally much smaller than ATX cases, and therefore have smaller power supplies, with generally lower power ratings, and fewer connectors.
The connectors on a power supply also deserve consideration. Most power supplies come with what looks to be an electric octopus of wires hanging off the back surface, and you need to make sure that somewhere in that tangled bundle are all of the connectors you need. The power supply should at least have as many connections as the number of drives, cooling fans, and other items found in the case. Up until recently power supplies had a fixed number of connections, and if you needed more, you needed to use splitters to distribute the power to all the components.
Modular power supplies that has 500W unit, are now available that eliminate that “electric octopus” all together, and allow the end user to connect just the cables they need. The flexibility of a modular power supply design not only lets you customize the connections to your needs, it also makes for a simple and tidy installation, since there are no extra wires dangling inside the case.
The selection of a high quality power supply may cost more money up front, but down the road it could wind up saving money. Many manufacturers now offer power supplies that consume less energy thanks to high quality internal components, advanced designs, and active power factor correction. These units are now able to provide the same power to the components in a computer, but due to increased efficiency, draw less power from the electrical outlet.
These days our society is becoming more attached to their electronic gadget such as smartphone, tablets, laptop or any other mobile gadgets. We become used to with updating current information in real time rather than waiting for tomorrow morning newspaper, for the news full report. Could this be a sign for the end of printed news era?
According to Google Executive Chairman, Eric Schmidt, he did not see any future for the physical version or print magazine. According to his predictions, the magazine will soon be replaced with the computer tablet. The predictions was mentioned by Schmidt at the conferences of Magazine Publishers Association. At that time, Schmdit talked a lot about the future of the mobile world and how the magazine should use this technology. In that discussion, he was pretty sure the future of the magazine will no longer exist in the print world, but in the tablet.
Schmidt prediction is not without reason. According to him, the tablet has a lot of functions that are not owned by the physical magazine. “The tablet is now more popular than PC. You can read in this product, tablets knowing where you are, and have accelerometer. All these things are things you can do on a tablet that publisher can not be done in the print magazine” Schmidt said. Schmidt also predicted that in the next five years there will be a product with a design similar to the tablet, that have high performance, and will replace traditional media. The tablet will have an impressive application, including the application of the magazine, which will take advantage of social activities and the location of the user.
The application will also add interactive experience. “It should be a positive thing for the publisher” Schmidt said. The use of tablets is also expected to help the world of magazine publishers in terms of advertising. “In the online advertising world, signaling the location allows you to multiply targeted ads than print ads current. There are more targets, more readers will click it, and more advertisers will raise the price of advertising” he added.
The signs of “death” printed news such as newspaper and magazine as been predicted by Schmidt is actually have already seen in recent years . Several large magazine has decided to stop its print edition. One of the biggest and well established magazine is Newsweek. After serving readers for eight decades, the world prestigious magazine announced ceased publication in print and switch to digital editions by the end of 2012. Meanwhile other publisher also face the same dilemma as the revenue for the advertisement and sales number continue decreasing for the past few years.
The Internet Corporation for Assigned Names and Numbers (ICANN) is working on a new program to manage the Generic Top Level Domain name/gTLD. The organization who manages and controlling the internet domain names around the world is predicting that there will be around 1,400 new gTLD names.
The new gTLD program’s that is conducted by ICANN will provide an alternative to beside the 22 gTLD that exist today, including . com, .net, org. Thus, there will be more options for various parties to choose a domain name internet.
According to the President and CEO of ICANN, the new gTLD program is the result of research and analysis over the last 8 years. He believes this program will bring major changes in the internet world for the better. “We will see the new domain names come from all over the world,” he said.
At first, ICANN will release 4 new gTLDs with non-Latin characters. Those new 4 gTLD will be exist using the Arabic, Chines, and Russian characters. ICANN had already received nearly 2,000 applications from many registration companies who wish to obtain new gTLD name. Most of the registration companies were competing to acquire popular domain names, such as .shop .stores, .taxis, and many more.
According to ICANN, the parties who are competing for popular new gTLD should discuss in advance to reach an agreement. If they cannot meet an agreement, then ICANN will held an auction for the desired domain name.
The emergence of new domain names on the internet most likely will become a great business opportunity that generates a lot of money for the registry company, especially for the registry company that manages the popular gTLD name.
It can be seen from the success of Verisign Inc. from the United States which becomes the registry company for the .com and .net domain. Until this day the gTLD for .com and .net domain is still the most popular and widely used in the Internet, followed by .org domain.
Surge protectors are intended to protect your electronics from a brief increase in voltage caused by such things as lightning, rolling blackouts, and heavy drawing electrical equipment. A surge protector reacts to divert the extra electricity to ground, and thus protects your expensive computer equipment from damage. A surge is any increase lasting three nanoseconds or longer, so a surge protector needs to react quickly. Most surge protectors also include a fuse (or breaker), and if the surge is too great to be handled without interruption, the fuse will blow. Although the fuse may be destroyed, it’s a small loss compared to what it may have saved.
Surge protectors come in all shapes and styles. Some basic models can even be found at your local dollar store, but offer no more than a few outlets connected to a breaker. No serious protection is obtained, but many people just want more outlets, not protection.
More serious surge protectors will probably cost a bit more than a dollar, but will offer some peace of mind that your equipment is actually being protected. In addition to protecting from electrical surges, some devices include extra features such as conditioning to filter out line noise and ports to protect other lines such as cable television, telephone, and networking.
Some surge protectors are able to protects up to 10 devices from surges, as well as offering line conditioning and ports to protect your phone line. A highly appealing feature of such a surge protector is that 4 of the ports are designed to accept bulky AC adaptors. For those with surge protectors that weren’t designed to be this user friendly, there is still hope in the form of Power Strip Saver Cables. Basically just 7 inch long extension cords, these items can come in very handy when trying to connect multiple AC adaptors to a more traditional surge protector.
As the internet keeps evolving, so have the methods of collecting personal information. Most of websites usually will require their visitors to register to gain access or participate. While the need for registration is understandable, tracking user names and passwords can be burdensome. Consider using software to store your passwords, in a safe accessible manner.
Usually most websites have privacy policies, but the values of privacy statements are only as honorable as the people behind the websites. Here are some tips for keeping passwords and your information secures and improves your account security:
Change your password frequently
Never share your password with anyone even if you are received an email that is said from the website admin and request your personal password. There are many people that still do not know that the website administrator will never ask your personal account password and they will never be, especially by email. The website administrator are able to review, check, enter, override or even terminate your account without your account password.
Try to choose a password that does not need to be written down, but not so obvious others would easily guess the password
Be sure your password is at least 6 characters
Do not use a password containing all the same characters
Do not send your password via email or provide it over the phone
Do not use pet, family, friend or even your own names, telephone number, zip code or address, your, family, or relative date of birth for your password. This is the first thing that many hacker choose when they want to break someone account in certain website.
Use a different password for each account
For business organizations, they must deactivate their terminated employees accounts immediately
Do not allow shared accounts
Password contains upper, lowercase letters, non-letter characters and numbers
Passwords are not foolproof. Do not rely on a password alone to protect sensitive information. Monitor your accounts closely to ensure that security is not breached.