Category Archives: Technology

What Is RSS Feed And How Does It Work?

RSS Feed is a short form for either of the two: Really Simple Syndication or Rich Site Summary. To explain the concept of RSS in simple terms, it is used to let the readers of a particular website or a blog know that the website they have subscribed to, has been updated.

To understand better, RSS is an improved version of bookmarking a site, where the reader does not need to do things manually as they are expected to do, while maintaining bookmarks, which usually gets messy when you are required to keep a track of a lot of websites in one go. RSS feeds rather get updated about every minute change in the website through a feed-reader which allows one to read updates from a particular site that you have been subscribed to.

RSS Feed Benefits

1. Easier to maintain a track of your favorite websites and get regular updates from them without the need to manually check each one, on a regular basis.

2. Website owners can easily get to let their subscribers know of any change to the website, once they submit regular feeds to RSS feeds.

3. Rather than searching all over the place, you can get all your favorite information in one place.

4. It’s literally impossible to miss out on important information, once you are subscribed to RSS feeds.

5. It saves a lot of your time and you get the most handy information right on your PC as quickly as a webmaster updates the website.

6. Email need not be shared for you to get updates, so your inbox is free of unnecessary spam and there are no security issues.

How To Setup RSS Feed?

Now that we have an idea, what a RSS Feed is, let us come to the next part and learn how the RSS Feed actually works.

The way a RSS feed or RSS channel works is based on a very simple technology. RSS feeds are XML files which are coded and safely stored on a server. Once these Feeds are created, they are linked to your website where when the users subscribe they get details brought across to them on a regular basis with the help of RSS Aggregators. RSS Aggregators or RSS readers, explained simply are computer programs that collect all the information or feeds in one place and organize them for the subscriber’s easy reading.

Example, there is a feed called Paint shop pro tutorials, once you are subscribed to it, you will get all the stuff related to this from different websites, in one place which helps in saving a lot of time, searching for the details on the net, visiting each website individually. Thus RSS feeds are useful to every web surfer to a large extent besides having great features for website owners too at the same time.

What Is Cloud Computing And Its Benefits?

Cloud Computing is one of the most talked about concept in Technology. In simple terms it can be explained as Internet computing. Let’s see how Cloud Computing works. When we say that the computing involves working on the net, in simple terms it implies that you do not install any of the software programs or upgrade your PC’s hardware for it to comply with those programs. The internet would take care of both the software as well as the hardware. Since both of them are virtual, this computing is referred to as, within the cloud or Cloud computing.

Just to give an example it would mean, instead of installing the Microsoft Word, you can access your word applications via Google docs, available to us on the Internet. Thus this “cloud” manages all your applications in a similar manner.

Next question that arises in mind is why we need Cloud Computing, when we can manage using each of these applications on our individual PC’s. Well, there are definitely a whole lot of advantages that would compel any user to opt for this technology. Here are a few of them:

1. We don’t have to worry about purchasing expensive software and installing them on our PC. This way we would save a lot of money. Any software can be accessed remotely for us to use at our convenience. There would be no compatibility issues as the software is not running on our PC.

2. We save a lot of time, that otherwise would be used to install and update every software, present on the PC. Just the way our email client like Hotmail, Yahoo and Gmail gets updated automatically, same would be the case with each of these applications.

3. It is safe and risk free. Today when you need to take the responsibility of backing up your data, lest the hard drive crashes, in Cloud computing, the respective vendor will do the needful. We don’t have to worry for any of it.

4. Server issues are not new. We’ve all had our share of trouble with them. In this scenario, Cloud computing would take care of them again. In the first place, there won’t be any server issues, because there will be multiple servers ready to take over, even if one of them crashes down.

Cloud Computing as we can see forms the base for the future of technology and has lot of benefits. There seems to be a lot in it to look forward to and seeing the impact that it has already created it is bound to take the technology world to new heights.

What Is Encryption ?

Since the Internet has become an important tool to gain access to an endless source of information, safety of computers and data has been very important as well.

Encryption is a process that is vital for a stable and secure environment for the computers and the Internet. The basis for encryption is derived from the age old process called cryptography, secret writing, which in fact must be decoded. Because cryptography is based on human input, computers are required to transcript the data and deliver safely to desired person.

What is encryption?

First, encryption is a method by which all forms of messaging, like e-mail, e-commerce, banking, or other personal data is encrypted, so they are unreadable to any other persons who does not have right to open it. This form of security is necessary to protect the privacy of almost all personal and private information held by one computer to another. Information, such as data or messages that are normally sent is known as plain text until that information is encrypted and then labeled as cipher text.

Here is a list of the various methods of encryption is used on the Internet today:

Banks and other financial institutions

Credit Card Companies

Private correspondence (e-mail)

Information for applications, for example, social Security numbers, individual personal profile information and other personal profile information.

Company Profiles and private information

Computers can use either of the two encryption schemes, public key or symmetric key, to convert plain text to cipher text to lock or unlock the data.

Public Key Encryption

Public key encryption, two keys are used with a user, a public key and a private key. The public key is given by a computer to another computer to which it communicates with. Then, to decode a message, a private key assigned to a specific individual user is used together with the public key.

PGP is a public key encryption scheme, it is more widespread because by this way, the  user can encrypt almost any amount of information.

Symmetric Encryption Key

This way, only one key is used, which is secret between your computer and the other one you are communicating.

Symmetric keys can be a faster method, but the two computers must have to change their information securely, where public key encryption do not have this problem.

The conversion of the plain text to cipher text is done using encryption algorithm, which is mathematical instructions used to convert.

The difference between the two encryption schemes is the length of the algorithm keys. The public key uses a larger amount of bits than the symmetric key.

Most computer systems are using both public key and symmetric key encryption today.

Encryption is the most reliable process for the much needed security people can rely on today at most of their important and personal transactions, allowing them to security and trust.

What is Super Computer ?

super-computerSuper Computers, like any other typical computer, have two basic components. The first is the CPU that executes the commands it needs to do. The other is the memory that stores data. The only difference between an ordinary computer and super computers is, super computers have CPUs faster than standard computers. This particular part determines the exact speed that a CPU can work. Using complex and state-of-the-art materials are connected, such as pipes, supercomputer designers optimize the functions of the machine. They are also trying to smaller length of circuits may be connected to the information from memory to the CPU at a lesser time.

Super Computers are designed for complex calculations at higher speeds than other computers. The designers use 2 processes for the improvement of its performance first method is called ‘pipe-lining’. It doing complex operations simultaneously by grouping numbers in the same order that calculates and are transmitted to the CPU in an orderly manner. The circuits in the CPU works continuously when data is entered into it.

Another method used is called ‘parallelism’. It does calculations in a similar way than orderly. This is where it performs different data at the same time and move on step by step. A common way to do that is to connect different processors that do calculations together. Each of these CPUs work for the commands given to it to execute on any piece of information.

All supercomputers use parallel or pipeline separately or even combine its processing speed. However, an increasing demand for calculating machines to the creation of the (SMP) massively parallel processing supercomputers. It consists of several machines connected to achieving a high level of parallelism.

What is Fiber Optic Technology ?

fiber-opticArt as well as Science is required as to know how the fiber optics are made and how they function for different uses in our day today lives. Fiber optic materials are made of those materials that transmit light. Bundles of very slim fibers of plastic or glass are packed into a tube. One end of such a fiber optic is placed at the light source and the other end functions as the lens of a camera.

Light is channeled through these fibers. Not only light but everything associated with light, images for example, also get transmitted from one end of the fiber optic to the other end. Bends and turns in the fibers pose no hindrance in this transmission.

The core of fiber optic materials is made of glass or plastic and it is highly transparent. This core is covered with a covering known as ‘cladding’. When light enters from one end and travels through the length of the fiber optic, this ‘cladding’ does not allow it to scatter outside the material.

The ‘cladding’ reflects all the light from inside the surface of the fiber optic. So, even if a bundle inside the fiber optic is not straight, the image is not affected. Fiber optics are capable of carrying light and other information over a wide range of distance. The distance may vary from a few centimeters to many hundred kilometers.

Fiber optics are primarily of two types. The single-mode fiber optic and the Multi-mode fiber optics.

Single Mode Fiber Optic

It is suitable for transmissions over long distance that happen at tremendous speed. They are capable of this because their core is very small and they have the property of accepting light only in the direction of the axis of the fibers. Small lasers are used to send light into fibers. The fibers are joined with low-loss connectors so that there is very less distortion of the light signal.

Multi Mode Fiber Optic

In multi-mode fiber optic materials the cores are big and they also can accept light from a variety of angles and can also function with a variety of light sources. The connectors that are used within the material are not very expensive. It is done because these fiber optic materials are not meant for long distance transmission.

Usage of Optical Fiber Technology

There are myriad uses of fiber optic materials in the technology savvy world of today. Communication systems use fiber optic materials in abundance and hence are highly superior to those communication systems that use the traditional copper cables. These systems do not need a lot of amplifiers, witness very less electrical interference and have a huge information- bearing capacity.

The messages are transmitted in numeric codes with the help of lasers. The lasers are flashed on and off at extremely high speed. This numeric code can comprise of different types of files like audio, text, numbers, illustrations etc. Fiber optic materials are also used in industries for many types of applications.