PC Online - Computer Tips And Tricks

The Differences Between CDs and DVDs

December 23rd, 2010

So What’s So Different About CDs and DVDs. CDs and DVDs have the same shape and size but that is where the similarities end. The differences lie in the make up of the surface of the disc which are invisible to the naked eye. The biggest difference that you can notice is that a DVD can hold far more data than a CD.

The reason for the big difference in the amount of data storage will become apparent when you understand how data is written to or burned to CDs and DVDs. A laser is used to burn pits around a spiral groove in the disc. Lasers have a wave length and the longer the wave length the bigger the pit. DVD lasers have a substantially smaller wave length than a CD laser. Consequently you can have more pits in the same amount of surface area on a DVD, which explains the large difference in storage capacity.

CDs and DVDs store everything, including audio and video, as a series of ones and zeros which means they are digital data storage mediums. The pits and lands (where there are no pits) on the DVDs and CDs represent ones and zeros. When the disc drive is reading data the laser is reflected off the lands but not off the pits. Microprocessors in the disc drive take the information from the laser and convert it into a digital format that your PC can understand.

What To Look For Before Buying A Computer

December 23rd, 2010

Knowing what to look for when buying a computer, can help you to narrow down your search for buying a personal computer, that is economical and has the configuration as per your requirements. This article will look at the most important points you need to look at, before buying a PC.You must also look for a good free anti spyware program. The first most obvious issue is that of price. How much are you willing to spend?. You also need to have a clear the task you will be performing with the new computer.

Depending on your requirements, the configuration of the computer will be decided. Simply, if you love playing online games, then you need a PC sysytem that can deliver quality performance without slowing the execution speed of your PC. You must also take into consideration if your daily task like checking emails, writing text documents, browsing online, listening to music, watching movies etc, can be easily carried out on the new computer. Since, technology has developed significantly, the tasks that you carry out daily are convenient in most of the computers available today.

Ultimate Ways To Protect Yourself From Spyware

December 23rd, 2010

Spyware refers to a specific type of illegal software that can either display unwanted advertisements or track your personal information, all without your knowledge or consent. The most serious danger of spyware is that it can collect information about you, including the websites you visited and even worse, your unique usernames and passwords.You can find many softwares that can provide spy ware scan. Obviously, spyware is not good for your PC or yourself, but there are ways that you can protect yourself from it.

Some Common Spyware Symptoms If you notice your PC running slower than usual or exhibiting any other unusual behavior, it may be a sign of spyware. Spyware can bounce back emails or send emails without your knowledge. It can also appear to “haunt” your PC, opening your CD drives or placing unknown icons on your desktop.

What Is The Difference Between Mac vs PC

December 23rd, 2010

With significant advancements in technologies and market competition, customers have so many choices when it comes to computers.. But what type of computer is suitable for you? Firstly you need to make a decision whether you want a PC vs a Mac.. There are many different areas that you can compare a mac vs PC. Let’s get started checking out some of the key things to look for in a computer.
The best way to compare a PC and Mac would be to compare the most similar Mac and PC. It was a great deal more challenging to compare the two a while ago as they used different processors. Nonetheless, over the last couple of years Apple has moved their machines to the Intel processor, this makes the comparability a great deal easier.

The style and design, or look of the computer itself is what most of us initially judge how much we like something. There are plenty of great PC brands out there that are making great looking machines. However, Apple continues to make the most effort in redefining what computers looks like and how attractive they can be. That said, there are plenty of possibilities on the pc side of things.