Computer Line

Senin, 22 Agustus 2011

PCTechNotes

Domain Name Extensions And Their Purposes

Posted: 21 Aug 2011 09:38 PM PDT

Do you know that domain name extensions have meanings and purposes? Websites owners are not just using them because they sound good. Some domain name extensions are cheaper than the others. If you are planning to buy your own domain name for your business or personal use and want to use the appropriate domain name extension, then below are the lists of domain name extensions and their meaning and purposes:

.com (commercial) – this is the most popular and widely used extension. If you will notice, most online businesses and companies prefer .com extension because it is highly recognized symbol if you want to set your business presence on the internet.

.net (network) – commonly used by companies and businesses that directly involve internet service and infrastructure like internet service providers and Web hosting companies.

.org (organization) – usually used by non profit or trade organization and association

.biz – commonly used by small business websites

.info – signifies a resource or information websites

.mobi (mobile) – for websites on mobile devices.

.us – American Web sites

.cc – this was made actually for the country code for Coco’s Keeling Islands. This is unrestricted and may used by anyone regardless of the country.

.bz - this was actually for the country code for Belize. This is unrestricted and may used by anyone regardless of the country. It is now being use by small businesses who can no longer have the name they want using the .biz extension.

.ws – was originally made as the country code for Western Samoa, but nowadays, it is commonly used as an acronym for “Web sites.” This is unrestricted and may used by anyone regardless of the country.

.tv – is for multimedia websites. This is commonly used by websites related to entertainment or media industry.

.jobs- this is usually used by websites related to human resource industry.

.eu – this was actually made for the European Union. If you want to use it, you must meet one of these requirements: must have a registered office, the central administration office of your business must be within the European community, or your organization was established within the European community .

.fm – although made for the country code, it is now commonly used for FM radio.

.am – just like the .fm, .am is now used for AM radio, the fact that it was originally for country code Armenia.

.name- this extension is created for personal use. This is commonly used by websites that gives personal information or photos of a person.

.edu – commonly used by schools and educational institution websites

.ph -this was made actually for the country code for Philippines. This is unrestricted and may used by anyone regardless of the country.

.edu.ph -this is commonly used by schools and educational institution in the Philippines. This is unrestricted and may used by anyone regardless of the country.

.travel – is restricted to used by websites related to travel industry like travel agents and airlines.

.pro – intended to be used by qualified professionals.

.aero – is reserved for association, agencies, and organization related to aviation field.

.int - claimed to have the strictest usage policies. It implies that the registrant is a subject of international law. If you are applying for this, you will be required to provide treaty based evidence like United Nations treaty registration number. It should also has independent legal status.

.asia – is made for companies, and organizations that are based in Asia, Australia, and the Pacific.

.coop – restricted to cooperatives

.cat – is for websites with or related to Catalan language and culture

.museum – restricted to legitimate museum.

.tel – This is a contact directory providing all types of contact information straight to the Domain Name System.

Domain Name Extensions And Their Purposes - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Senin, 15 Agustus 2011

PCTechNotes

How The Back Of Your Favorite Websites Look Like

Posted: 14 Aug 2011 11:11 PM PDT

It can be really interesting if you’ll be able to peep the back part of your favorite website, isn’t it? Literally, I mean the back part or the inside part of the website. You want to know what I mean?

Have a look:

Quiet interesting, right? Its just like an inverted version, but its really like you’re viewing the back part. Its an image created by Back of a webpage. I can’t say what you can do to them. I mean they have no special purpose, maybe just want to show you the back part. That’s all. *grin*

But admit it, very creative, right? There are lots of back view of different websites like Flickr and Youtube, and if you want to see them or want your images or website to be featured, then be their guest!

How The Back Of Your Favorite Websites Look Like - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Computer Trivia # 6: 2011 Fastest Computer

Posted: 14 Aug 2011 09:00 PM PDT

Do you know that as of August 2011, the fastest computer in the world is the “K Computer“ developed by two Japanese computer RIKEN and Fujitsu?

The said K Computer system has 672 computer racks, 68,544 CPUs and 8.162 petaflops calculation speed. It won the fastest supercomputer in the Top500 ranking of the world’s supercomputers considering that is only half completed, surpassing the 2.507 petaflops of China’s Tianhe-1A that won the 2010 fastest supercomputer in world. K Computer system is expected to be completed by the year 2012 with a performance to reach 10 petaflops. But with the U.S. aiming to home the fastest computer title once again with their “Titan” computer, to be built by Cray Computer with a predicted speed of 20 petaflops, let’s see if K Computer can maintain its title by the year 2012. The Titan computer first stage of computing array is expected by the end of 2011.

* petaflop = quadrillion floating-point operations per second.

Computer Trivia # 6: 2011 Fastest Computer - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Sabtu, 13 Agustus 2011

PCTechNotes

Computer Trivia #5: The Origin of Computer Mouse

Posted: 12 Aug 2011 09:00 PM PDT

Do you know that the computer mouse you are actually using now was called “mouse” because of the cord?

The computer mouse was invented by an American inventor named Douglas Carl Engelbart. The idea of the mouse started with his thoughts of finding way for people to interact with the computer screen. According to him, their team’s early ideas are having a big heavy tracking ball that looks like a cannonball, a different gadgets with pivot that moves around, a light panel and a joystick that when you wiggle will allow you to steer things. In the end, the mouse was invented. The first mouse looked like a wooden shell with two metals.

The mouse was first called x-y position indicator, then nicknamed mouse by one of Engelbert’s team mate. They were hoping that it would get a decent name once they released it to the world, apparently it did not and was called Mouse until now.

Incoming search terms:

origin of a computer mouse

Computer Trivia #5: The Origin of Computer Mouse - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Jumat, 12 Agustus 2011

PCTechNotes

Computer Trivia #4: The Truth Behind The Virus Nickname Chernobyl

Posted: 11 Aug 2011 09:00 PM PDT

Do you know that on the 13th anniversary of Russia’s nuclear disaster that said to be the deadliest, a windows virus known as “chernobyl” damaged around 500,000 hard drive? Its screen name “Chernobyl Virus” was created because the first payload trigger of the said virus was coincidentally fall on April 16, 1999 which was the 13th anniversary of the Chernobyl disaster.

Chernobyl a.k.a. CIH or a spacefiller is a Microsoft Windows Virus that can literally destroy a computer. This virus that was written by Chen Ing Hau during his college days at Taiwan’s Tatung University way back 1998. Chernobyl is considered one of the most damaging viruses as it was created to infect Windows based operating system by overwriting crucial information on the infected system drives, and sometimes corrupting the system BIOS. It infects

Chernobyl virus transmit under the portable executable file format to some of Windows operating system like 95, 98 and ME. Luckily,Windows NT-based OS is free from this virus. It will then split its code into small bits and embed its parts into the inter-section gaps between files and then rewrite a re-assembly routine. Because of its method of just filling the gaps, the virus do not grow its size, making if difficult for the antivirus software to identify it. This acquired the virus its another name “Spacefiller“

Computer Trivia #4: The Truth Behind The Virus Nickname Chernobyl - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Kamis, 11 Agustus 2011

PCTechNotes

How To Disable and Remove Thumbs.db

Posted: 11 Aug 2011 12:48 AM PDT

What is Thumbs.db

When you open your Windows Explorer or Open any of your images folder, I’m sure you have notice a small file inside those folders called thumbs.db. The main purpose of this file is to speed up the showing of thumbnails when you are viewing a folder in Thumbnail view. It stores thumbnails of graphics files, certain documents and also movie files. The only disadvantage of this file is it eats up disk space. Although this file is very small if you have lots of thumbs.db files on your drive removing them will help you save valuable disk space.

Some users are annoyed by those thumbs.db files cluttering their system. So if you are one of those people that don’t want those little files littering your disk then follow the steps below to turn this feature off.

How to disable Thumbs.db in Windows XP

Open My Computer or Open any folder

On the Menu bar, Click on Tools

Click on Folder Options

Click on the View Tab

Put a check in the option “Do not cache thumbnails”

Click Ok

Close My Computer

How to disable Thumbs.db in Windows 7

Open Local Group Policy Editor by typing gpedit.msc in the search text box

Expand the User Configuration found in the left-side pane of the Editor window.

Click Administrative Templates

Under Windows Components

Click on the Windows Explorer item.

Find the setting "Turn off the caching of thumbnails in hidden thumbs.db files" (see below).

To make changes, double-click on "Turn off the caching of thumbnails in hidden thumbs.db files"

Check the "Enabled" radio button and click OK

Close the Local Group Policy Editor and all those annoying those thumbs.db will disappear.

How To Disable and Remove Thumbs.db - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Computer Trivia #3: The Origin of the QWERTY Keyboard

Posted: 10 Aug 2011 09:00 PM PDT

Do you know that the computer keyboard you are using right now began with the invention of the typewriter? The transition of the typewriter into computer keyboard was made possible by some technological development. Computer keyboard is also known as “The QWERTY keyboard”. It was invented by American inventor , Christopher Sholes.

The early computer keyboard was either a teletype machines or keypunches, and it includes a lot of electromechanical steps to be able to transmit data between keyboard and computer that slowed the process. Around late 70′s until now, all computers already been using electronic keyboards and VDTs. But the computer keyboard owes it original layout to Christopher Sholes, the inventor of the QWERTY keyboard.

Computer Trivia #3: The Origin of the QWERTY Keyboard - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Rabu, 10 Agustus 2011

PCTechNotes

Computer Trivia #2: The Magic of 0 and 1 Digit

Posted: 09 Aug 2011 09:00 PM PDT

Do you know that computer only understand 2 digits? That digits are 0 and 1, and they are called Binary. When you type any letters or characters in your keyboard, computer does not understand it the way we do. The character you typed will be translated to binary code designated to it. Like for letter “M”, it has binary code of 01001101.

Complicated, isn’t it? But believe it or not, that’s the way it goes. If you are interested on knowing how it works, then try searching for Binary Numeral System. Good luck!

Computer Trivia #2: The Magic of 0 and 1 Digit - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

Selasa, 09 Agustus 2011

PCTechNotes

Computer Trivia #1: ENIAC, The First General-Purpose Electronic Computer

Posted: 08 Aug 2011 09:00 PM PDT

The first general-purpose electronic computer was a turing-complete digital computer known as ENIAC or Electronic Numerical Integrator And Computer was invented by John Presper Eckert and John Mauchly at the University of Pennsylvania. The construction of ENIAC began in 1943 and last until 1946. ENIAC measured around 8x3x100 feet had 1,500 relays, 7,200 crystal diodes, 17,468 vacuum tubes, 10,000 capacitors, 7 0,000 resistors, and 5 million hand-soldered joints, and consumed 150 KW of power. Its speed was a thousand times than other electro-mechanical machines. It was designed for the purpose of calculating artillery firing tables for the US Army’s Ballistic Research Laboratory and was programmed to solve different computing problems.

Incoming search terms:

first general computer invented

Computer Trivia #1: ENIAC, The First General-Purpose Electronic Computer - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks

How To Easily Remove Google Redirect Virus

Posted: 08 Aug 2011 06:55 PM PDT

One of the most annoying computer infection I ever encounter is Google redirect virus. If you are reading this post,either you are my regular reader or you’ve been a victim of this virus and wants to know how to remove Google redirect virus.

What is Google redirect virus?

For those who still don’t know how this virus works, let me give you a “hands on” explanation. Say you are searching Google for some research works, assignments or just random browsing. You found what you are looking for, you click the link, but to your dismay, you’ve been brought to a different site. The next link you clicked also brought you to the same site. And the site has no connection to your searches or to the site you are trying to open. In other words–you’ve been redirected! Some of your computer programs won’t run, without producing any error. Also, this google redirect virus has a capacity to block sites.

Who are usually the victim of this Google redirect virus?

Regular users like you are the usual victim of this Google redirect virus. This virus hijacks your Google searches and then redirect you to another website, that is usually a fake websites with advertisements or corrupted pages.

Where can you get Google Redirect Virus?

Don’t curse Google for this! Google has nothing to do with this virus. Blame it to the crazy head computer genius criminals who created and distributed the malware. You can usually get this annoying virus from visiting a malicious websites with unsecured browsers.

How can you get rid of Google Redirect Virus?

Of course that’s the question you want me to answer. You still don’t need to run to your computer technician or do some formatting to your computer. Follow the instruction below in removing the Google Redirect Virus.

The first thing you need to do is download tdsskiller from the following link and save it to your desktop. Click to Download TDSSKiller

If for some reason you are unable to download the file then TDSS may be blocking it. What you can do is to download TDSSKiller from a clean computer then transfer it to any external drive or USB flash drive.

Not that simple as running a regular program. The creator of the google redirect virus is smart enough to know what TDSSKiller can do. But don’t worry we’re wiser than him. First, rename TDSSKiller by right-clicking the TDSSKiller.exe icon from your desktop and select RENAME. Now you can edit the name with any name you want but do not forget that it should end with the .com extension. For example, asdfgh.com or 14344.com. Now that it is wearing a mask, you can proceed with the running of the program.

Click the Start scan button to scan your computer for TDSS infection. It will then display a result screen to find out any infection was on your computer.

If the infection is on your computer, you can get rid of google redirect virus by clicking the Continue button. The TDSSKiller will now work on attempting to clear your computer from the infection. If you do not get the message Cure, then just choose the default action Skip and press Continue. Do not attempt to change it to Delete or Quarantine as it may also delete the infected files that are needed for Windows to operate properly.

Once finished, it will give you a report stating whether the cleaning operation is successful. Reboot is required to finish the cleaning process, so click on the Reboot now button and let it finish the removal of the TDSS infection.

If you understand this, then this information may help in detecting TDSS:

Here is a list of antivirus vendors and their detection names for TDSS.

Definition Name	Anti-virus Vendor
Packed.Win32.TDSS, Rootkit.Win32.TDSS	Kaspersky Lab
Mal/TDSSPack, Mal/TDSSPk	Sophos
Trojan:Win32/Alureon	Microsoft
Packed.Win32.Tdss	Ikarus
W32.Tidserv, Backdoor.Tidserv	Symantec
Trojan.TDSS	MalwareBytes'
Backdoor:W32/TDSS	F-Secure
BKDR_TDSS	Trend Micro
Rootkit.TDss	BitDefender
Generic Rootkit.d	McAfee

How To Easily Remove Google Redirect Virus - PCTechNotes :: PC Tips, Tricks and Tweaks - PC Tips,Tricks and Tweaks