11.07.2009

The Fact About Traces Left in Your PC Even After Deletion

Are you aware that your computer may have Cookies, footprints or other traceable paths from deleted files? Allot of people think by deleting the files any traceable evidence that they were once there goes with the file. Every file leaves some kind of footprint to their previous existence.

These invisible files, even though you may have deleted them, remain on your hard drive and take up space causing your computer to run slower, take longer to boot up and can even cause fatal errors and crashing which can cause you to lose valuable files and programs. Finding these invisible files and deleting them is nearly impossible for the layperson because most people have no idea where to look.

But there are software programs that will find them for you.These programs find the hidden files for you and delete them from your hard drive forever. If you are interested in protecting your privacy, it is important to ensure that old emails or files are permanently deleted because one never knows who might find them later. Anyone, your boss, spouse or even a total stranger can access and view your deleted history at anytime, which is a worrying thought, isn't it?

There are a number of cases where wives have used these details against their husbands. Precaution is necessary for those need it, needles to say that a clear person has nothing to worry.

These files can be found on your registry in windows very easily. It is very important you know what you are doing before attempting to delete any of these files. You very well could crash your entire system by deleting the wrong file. How embarrassing would it be to explain to your boss why or how you just deleted your operating system on your work computer by deleting the wrong files.

Catching these hidden footprints from anywhere in your computer is made possible by programs called the Privacy Controllers. There are very few Privacy controller programs really effective. You may find a number of these programs which ends up with only big words for advertising and sheer waste of money. Many an internet scammer tries to get your details like the credit card number by making you buy his product (his Privacy Controller Program) with his charming advertisement.

For getting more information on getting these hidden footprints removed totally from your entire computer, you can download a free detailed report which puts light on the process of creation of these hidden files, how it is saved into your computer and its permanent removal. As precaution is always better than cure, it is always good to keep your computer clean from these hidden footprints even if there is nothing to hide.

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10.26.2009

Building A PC

Many people simply go to the retail store and get sold to when it comes to computing equipment. You would be very surprised how easily you can pick up all the core components and assemble yourself or get a friend or family member in the know to do it for you. All the top brand PC manufacturers such as IBM, HP and Fujitsu Siemens offer you pre built PC’s, Dell on the other hand will take your order and build to your own style. Off them all Dell will come across more flexible with the specification, however, building your own will not only save you many dollars but make you aware of just how much profit these guys are making.

What are the core components of a PC?

Well let’s start with the basics you will need no matter how high or low spec you want the computer:

PC Case – Motherboard – Processor Chip – Fan – Power Supply – Hard Disk Drive – Memory (RAM) – Power Cord – Keyboard & Mouse – Graphics Card (may come on the motherboard) – Sound Card (if you require one). All these components will get you started. Remember build the PC to your own needs. Gaming PC’s generally need a good graphics card with 3d capabilities while general office PC’s do not need such powerful cards.

Processors:

Intel and AMD are the key players when it comes to processors, Intel offer the Pentium chip or Celeron while AMD have their range such as the AMD Athlon and Sempron. While both companies have their benefits Intel’s being that they are the largest selling globally but AMD seem to have the faster processing capabilities. When looking at the processors think sensibly and ask yourself do you really need the latest and greatest or would you notice the difference in point two of a processor e.g. 3GHz compared to 2.8GHz.

Remember keep the cost down, basic components such as the PC case comes in a number of different styles such as Mini Tower, Desktop. Choose what suits you. RAM (memory) will depend on what you plan to do, some games and simulators require large amounts of memory so check before you buy, and the graphics card will also depend on your PC plans. If you are generally using the PC for home and Internet browsing remember to purchase a modem or if you are planning broadband arrange with the installer and get yourself on the waiting list.

Building the PC

Building a PC is not as daunting as it seems. If you have not attempted to do this before it is a good idea to have supervision. Some of the components such as the memory need careful handling due to static electricity. Get an anti static wrist strap to protect the components, they cost very little and could save you a lot of money. There are plenty of cheap books out there to guide you in assembly but you will also find free articles online with diagrams for assembly.

Software:

Hardware is one thing but you also need the software such as the operating system and anti virus software for protection against viruses. Depending on what you want and what you are used to using before you can get free operating system such as Linux. Most of us are used to Microsoft Windows but you will require a licence to use this software. You may also need some office software such as Microsoft Office XP or 2003 standard or Professional edition. The anti virus software is essential and Norton’s or McAfee are some of the better known brands. There are also free downloads that will help protect your PC such as Stinger and Ad-Ware.

In Brief:

Building your very own PC gives you the flexibility that most manufacturers do not. The price is greatly reduced if you can assemble yourself and it will give you a great insight to all the components and key terms in computing. You will be surprised to find that not all is as technical as first seems.

Some quick notes: Do not forget the following: Modem – Make sure you also have enough USB ports for external devices such as a printer or digital camera. Always back your files up such externally on the off chance you have a problem with the Hard Disk Drive and your files are not transferable, something like a usb keyring would be ideal.

10.23.2009

Repairing a Damaged CD

Why compact discs get damaged. Compact discs are all plastic. Compact discs are even not sensitive to magnetic fields as in case floppy disks, which never used to retain data when even a slight magnetic field is crossed with floppies. Then what is the reason why CDs get corrupted?

CDs work on the principle of reflection of light. CD drives have a built in laser that is used to read data. When laser is focused on to the CD the beam get reflected to a point when there is some data on that are i.e. 0 or 1 the points where light beam lands back is different which symbolizes the bit value.

When something on the CD breaks the path of the laser light, something like dust particle or something else like a FINGER PRINT!!! Finger prints are nothing but natural oil from skin that sticks to the surface in contact with the skin in a pattern of skin cells. This oil or say fingerprint helps in refraction of light and loss of data to the reading source i.e. laser.

When CDs don't run the reason is because something is interrupting the laser to read the shinny side of the CD. But I have important data what should I do now?

Most of the times it is because of dust or fingerprints, you need to clean the CD.
You can clean your CDs with plain water or a bit soapy water. And it is better to clean the CDs after some time. But this doesn't mean you should start putting your CDs in dishwasher or washing machine every week.

All you need to do is to wipe the shinny side of the CD with a clean moist cloth and try running it again make sure the CD is dry before you run it.

People say about using all different sorts of things to clean CDs like toothpastes, wax polish etc but I would recommend you to buy some CD cleaning kit. But if you still want to go trying, do let me know the results.

And one thing I must add is that DVD work on the same principle and are bit more sensitive to dust and fingerprints. You can also use the above mentioned procedure for DVDs. But you still need to be careful with DVDs.

10.13.2009

A Close Look at DVI Cables

We all have many times heard about DVI, but what does it really means and what it does? What is the main function of this tiny white port on a video card? How it can benefit you and your personal computer? Do you know which DVI is suitable to meet your requirements?

Digital Video Interface is created by Digital Display Working Group to solve the problem of accommodation analog and digital interfaces just by using single connector. It was developed because of insufficiency of standardization in digital interfacing.

Three types of standards can be seen in DVI cables. It is very important to know how each type looks like before buying to upgrade your DVI. So it is very important to know how DVI cable works and which one will be most beneficial for you.

However, DVI cables are still in the phase of development. Hence there is no specific standard for the DVI cable. In ideal circumstances, DVI home theater cable is capable to create ' digital to digital' connection between the data or video sources and home theater projectors.

The standard rule for DVI cables is that it should have maximum length of 5 m for trouble free operation. It is very typical to decide a DVI cable first time.

There are two types of DVI connector and each has its own characteristics. The flat pin denotes whether the cable is analog or digital. A flat pin with four surrounding pins denotes either DVI-A or DVI-1. A single flat pin denotes DVI-D. The pin sets depends upon whether the cable is single link or dual link or analog.

To choose a perfect Digital video interface cable you should remember these tips:

1. Check both female DVI plugs to make sure what type of signals they compatible with.
2. One or both connections should be DVI-D if you are choosing a DVI-D cable.
3. One or both connections should be DVI-A if you are choosing a DVI-a cable.
4. If one of the connections is DVI and other is VGA, and if the DVI is analog compatible, then you must buy a DVI/VGA adaptor or a DVI to VGA cable.
5. when both connections are DVI-1, you are advised to use any of DVI cable, but better if you use DVI-1 cable.
6. If one connection is digital and the other is analog then there is no possibility of connection between them.

10.04.2009

Understanding Compression

What It Is and What’s Involved

Downloading files from the Internet has always been one of the most popular activities on the Internet – third to sending email and browsing the web. We download files from software libraries, ftp directories, YouTube and Google Video, MP3 sites, and we download files sent to us as email attachments.

Being so popular an activity, it’s imperative that you compress the files destined for another computer. File compression combines a number of different files into one file, and it can also significantly reduce a very large file to a smaller one. As a result, the transmission of a compressed file across the Internet is faster and smoother. This article looks at compressed files a little closer and it describes how to compress and decompress them using two of the most popular archiving programs.

Identifying Compressed Files

Most files are compressed in .zip format (if you’re using Windows) or .sit format (if you’re using a Mac). The two most popular software programs used to compress and decompress files are Winzip and StuffIt respectively. There are other programs that do the same thing and there are even programs that can compress and decompress files for both the Windows and the Mac system. However since Winzip and StuffIt are the most popular, we will assume you will use either one to compress and decompress your own files.

If you download a compressed file from a website or file library that ends in an .exe extension, take note that although the file is compressed, it’s typically a file that will install a program onto a computer. .Zip or .Sit files don’t install software – they merely archive a collection of them into one, or they significantly reduce the size of a larger one.

Decompressing Files

Assuming that you have Winzip or StuffIt installed on your computer, you can access the files archived inside a .zip or .sit file by simply double-clicking the archive (a file ending in a .zip or .sit extension). Double-clicking one of these kinds of files will open up a window that displays the contents of the archive. In most cases, you can double click a file inside this window to use it, or you can select it and drag the file to a folder to view later.

Depending on how you elected to install Winzip or StuffIt, you may be able to right-click a .zip or .sit file and have the program extract its contents into a new folder for you.

Compressing Files

When you want to upload a file or email a collection of files to a friend, it’s best to archive it as a .zip or .sit file first. This will decrease the time it takes for your computer to send it elsewhere, and it will also decrease the time it takes for someone else to download it.

To create your own .zip or .sit file, you can select a single file or a group of files from within Explorer, and right-click the selection. Again, depending on how you installed Winzip or StuffIt, you can click the “Add to Zip” or “Add to Sit” option and have these programs automatically archive the file(s) into one.

Some files compress better than others and in some instances, you may not notice that much of a difference. The files that compress the best are images, documents, and multimedia files. Executable files (files that end in an .exe extension) don’t compress that well, however when they’re archived with a sizable number of other files, they compress rather well. Go figure!