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Basics of Operating Systems

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An operating system is a program that manages the computer hardware. Operating system acts as an intermediary between the computer hardware and the user and also provides a basis for application programs. An astonishing aspect of operating system is how varied they are in achieving these tasks for the computer. Mainframe operating systems are intended first and foremost to optimize consumption of hardware. Personal computer operating systems support complex business applications, games and everything in between the user and hardware. This is the basic need of a computer to be run because the instructions are directly given to the hardware with the help of operating system.
The operating system is a large and complex set of instructions therefore it must be created piece by piece so that the problem which comes in the development of software can be handled and should be take care of. Each of the pieces should be well defined in context to the system which carefully defines the input, output, and the functions given by the user to the hardware.
For use in hand-held computers the operating systems are designed in sequence to provide the environment in which the user can easily interface with the hardware to execute the various programs. Therefore some of the operating systems are designed to be convenient with the user, others to be efficient with the users and some of them are designed as the combination of both of them. The operating system is a software or asset of instructions that intimately involve with the hardware to execute the different types of operations given by the user. Therefore we can also say the operating system as a resource allocator which allocates all the resources needed by the hardware to accomplish the command provided by the user. Operating system is especially concerned with the operation and control of I/O devices.

Filed Under: Computers, General, Software Tagged With: Android, Anti-Virus, Hardware, IP address, Microsoft, Microsoft Windows, Operating system, Personal computer hardware

Present scenario of desktop computers

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The computers whether they are for individual or business purpose are available with very attractive features and configuration providing benefits to the customers exist in the market. The accessories included in any of the desktop computer are directly connected with the motherboard which is the main component of the desktop computer. Various functions can be performed with the increased utility and capacity because of the durability of the desktop computers; this durability of the computer allows many more things or actions simultaneously without any disturbance.

Therefore, many companies had launched their products in the race of computers; there are wide ranges of products in the market from which one can choose his desired desktop computer. Every brand which manufactures a computer, wants to be the center of attraction for every customer. The video and music advertisements have been raised by each of these companies in accordance with the trend and demand of the market. The first priority given by the customer is the rates of computers i.e. the computer he desires is affordable to his pocket or not. The companies are giving a lot of concentration on this thing that the customer should be impressed by the company rates.

The computers are loaded with astonishing features that can attract the customer from the other brand in the market. The companies are providing new software with the installation and one key recovery system so that one can reinstall all the programs whenever the need be. The desktop computers are available with high speed processor and wireless networking therefore the systems are easier to use and comfortable to access any available network. The desktop computer accessories comprise of keyboard, display screen, mouse, printer, scanner, internet camera, DVD, head phone, Bluetooth, and many more items which make the work of user easy and convenient so that he can perform all his operations

Filed Under: Computers, Internet, Security, Software Tagged With: Advanced Micro Devices, Apple, Bluetooth, Computer case, Desktop computer, Hardware, Laptop, Universal Serial Bus

Things to consider before purchasing computer

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The changes in the computer world are so rapid that the individual who had just brought the computer before a few months ago would surprise to see the alterations in the product. Some months ago there was the dual core processor in general use but suddenly the core 2 duo has been launched. It would not be a matter that we are using the computer for personal work or for the business purpose, the modifications would be certainly needed on a regular basis otherwise the old systems will be obsolete in little time span.

Now days the market has been invaded by the latest models of the computers with the latest technology. Therefore one has to choose from a wide range of computer models, the one which is most suited for the purpose it is being purchased. In the market there are three categories of computers available, desktops, laptop and notebooks. All of them offer something unusual to the customer. One has to decide about the most excellent model which can satisfy all the needed requirements. Whenever one goes for buying a computer for personal use or for business, there are some necessary things one has to take into account like the memory, the graphic card, the processor and the operating system on which the new system is going to run. All of these things are going to play a vital role in the performance of the new computer.

These days the gaming computers are too capturing the attractions of consumers; these gaming computers are available to prospective customers with inbuilt play station facilities and the graphic card to play an uninterrupted game on the computer screen. The computer available in the market is fulfilling both purposes, whether personal as well as for Business use. The latest technology for the customer is available with the every brand in the market one can think of.

Filed Under: Computers, Internet, Security, Software Tagged With: Advanced Micro Devices, Central processing unit, Gaming computer, Hardware, Intel Core 2, Multi-core processor, Nvidia, Video card

Types of Operating Systems

The most of personal computers use the Windows Operating System. It has about 90% of the market share which make it the largest share holder in context with the Operating Systems. At present, Windows XP is the mostly used version of the Windows Operating Systems which has been launched on 25-10-2001. From that day till today it is the most favorite Operating System for the users. Windows 7 is the latest version of Windows which is popular now days.

A diversity of instrument architecture use Unix-like Operating Systems. The business servers and the control centers in basic educational and technical education environment are using this sincerely. Free UNIX alternative, such as GNU, BSD or Linux are admired in this vicinity. Some UNIX alternatives like HP-UX of HP and AIX of IBM have been premeditated to take on the retailer computer machinery. The software like Solaris, has been devised to work on numerous sort of hardware, together with x86 servers and PCs. Mac OSX of the brand Apple which is hybrid kernel-based BSD alternative consequent as of Next STEP, FreeBSD and Mach, has been put back on in place of Mac OS which was a non-UNIX program of Apple.

The originators and designers of the UNIX operating system developed Inferno and Plan9, at the laboratory of Bell, which were engineered for contemporary dispersed situation. Plan-9 was intended to be a network Operating System, in addition to it, it had in-built graphics, in contrast to the UNIX that added these aspects to the intend afterward. It is at present released under the Public License Lucent. Similarly the Google has come up with its mini operating system which is designed only to target those persons who spend their most of the time on the internet. This internet browser cum mini operating system of Google is Linux kernel based.

Filed Under: Computers, Software Tagged With: Berkeley Software Distribution, FreeBSD, HP-UX, IBM, Microsoft Windows, Operating system, Personal computer, Unix

Computers role in Today’s scenario

In the present scenario, the world cannot be imagined without computers. The enormous load of work which the computers are dealing with while serving the human society have reached to such a moment that the world will be stand still if any time the computer system fails. As the futuristic Hollywood movies have shown earlier, the present time seems to have reached there. The basic amenities like electricity, water supply, and traffic system etc. in a modern city of the world are all controlled by the computers. What will be the situation, if computers anyhow stop working? Horrible picture emerges if a person wants to imagine the scene.

On the all fronts of our lives, starting from the birth up to the death no place is there at which computers are not playing a major role in normally proceeding the life of humans. They help the human beings to increase the quantity of necessary things as well as ever increasing the quality of that thing also. The work which was once completed by the 100 peoples in 100 days, that work is now reduced to 10 peoples for 10 days just with the help of the computer controlled machines.

The new researches with the computer help have helped to even get the whole information of the human gene by help of which the super humans can be produced who will change the whole human race on earth. The areas of education and medical have got a market boost only with the help of computers at every step. Student is able to get the solution of all his problems on the net. He can simultaneously be in touch with his friends and relatives who are at the corners of the world. The surgery of a person can be live supervised by a specialist doctor who is thousands of kilometers away physically.

Filed Under: Computers, Internet, Security, Software Tagged With: Cold War, Cyberwarfare, Future, Human, Recreation, Ronald C. Arkin, Spock, United States

How Operating System Works

The functions of the operating systems include the control, maintenance and coordination of the software programs present there. The coordination between the user and the machine as well as the whole system of sharing of the data between the two is dependent upon and controlled by the operating system.

Edsger W. Dijkstra has devised an operating system in the year 1968. This operating system was first published in monographs in year 1966. This operating system was equipped with multiprogramming arrangements. Operating system performs fundamental responsibilities, such as take the input data interred from the keyboard and make this data to show on the computer monitor. It also makes a full record and maintenance of all the directories, sub-directories and the files contained therein. The other accessory devices, like printer, scanner, disk drives, speakers, blue tooth, head phones etc. are also fully tracked and maintained by the OS. As for as the basic security of the system is concerned, OS also take care that only authorize person can amendment the data on the system.

Operating system endows with a reliable system approach to all of the heterogeneous operating system and customizes the behavior of standard system elements based upon utility discovery. Operating system development is one of the more involved and technical options for the computing hobbyist. The group of hobbyists works on their own to make the sequence of programs. Sometime they interact with each other to get the specific program.

The two types of software are dealt upon by the Operating System. The first one is known as software plate form which gives a base to other software. The other software is referred to as application software which is the programs that can be operated only on predefined software plate forms. This application software is specific to particular OS and not compatible to all the OSs.

Filed Under: Computers, Security, Software Tagged With: Apple, Data, Edsger W. Dijkstra, Mac OS X, Microsoft Windows, Open source, Operating system, Personal computer

Internet Safety: Things to Remember

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The internet is a large place filled with information of all kinds. Not only does the internet contain a lot of information, but it also provides people with the ability to shop, catch up with old friends and find new ones as well. The mistake many people make when they surf the web is that they forget about personal safety.

While more and more people are beginning to understand how the internet works and everything they can do with it, many of these same people don’t fully appreciate it. What this means is that they don’t understand how dangerous the internet has can be. This is because most internet users access it from the comfort of their homes. Since they feel safe in their homes, they don’t feel as if anyone can harm them. However, every time they open their internet browser, they are taking the risk that someone may ‘harm’ them…someone they don’t even know! Therefore, there are several things you need to be aware of while online.

Nothing is Private: That’s right. When you are online, you need to understand that there is nothing that is private. Anything you post online can be found by someone else. It doesn’t matter if you’re posting on Facebook, your favorite forum or even a response to an interesting blog. It can be found. So, always be careful what you say online.

You are Being Tracked: That’s a scary thought, but it’s true. When you surf the internet, every place to go is being monitored to find out how long you’re there, what information you’re seeking and if you purchase anything. All of this information is used to determine what type of ads to target you with…among other things.

Interception Happens: It is possible for any communication you send to be intercepted. Therefore, be careful what you say in “private” conversations online. One way to help prevent this problem is to use encryption software.

Filed Under: Security, Software Tagged With: Child, Child Safety, Facebook, Information, Marc Andreessen, Online and offline, RockMelt, Web browser

Increase Internet Security with Internet Anonymizers

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There are a lot of people that use the internet for fun and don’t care if the sites they visit or purchases they make are being tracked, but there are many more people that believe in the right to privacy. While there are several things that can be done to help maintain your privacy, one of the best things is to stay anonymous while online. You can do this with the help of an internet anonymizer.

Internet anonymizers are highly recommended for those that wish to remain anonymous online. Anonymizers will prevent your name from being linked to any sites your computer visits. This software can be especially useful for those conducting research of any kind, local and state officials or anyone involved in politics. They’re also great for those looking to enhance their online security.

Anonymizers are pretty cool because they keep the identification information on your computer safe when you surf the web. The anonymizer service is actually doing the surfing for you. It’s this technology that allows you to explore the online world anonymously.

You may think that anonymizers are just for those with important jobs, but the truth is that they are also designed for anyone that wishes to protect themselves and their information online. There are two types of internet anonymizers available. They are single-point anonymizers and networked anonymizers. Obviously, networked anonymizers are best for those with networked internet connections. Networked anonymizers make it more difficult for a traffic analysis to take place.

Single-point anonymizers use a specific website to surf anonymously for you. These anonymizers are usually used by for home internet users. Not only are they great for keeping your information safe while you surf the web but they will keep your online communications safe from online eavesdroppers when you use a secure internet channel. The bottom line is that anonymizers increase internet security.

Filed Under: Security, Software Tagged With: Anonymity, Anonymizer, Facebook, Internet security, IP address, Privacy, Security, World Wide Web

The Basics of Internet Security

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The internet, also known as the “World Wide Web”, is increasingly the place to obtain information on all aspects of life. In addition to getting information, it is also an open marketplace for shopping worldwide, watching movies, listening to music, and downloading various documents and programs. Due to the massive amount of people on the web performing these functions at any given time, there are security risks involved. Dishonest people attempt to infect your system with a virus so that they may break down your system while stealing your personal info. For this reason, it is essential that you have an up to date anti virus program running at all times.

There is also unwanted email, called spam, to deal with. In addition to contacting you illegally, these emails often try to trick you into providing personal information to a third party. One of the ways in which they have been successful with this is by sending you an email that looks like it came from a company that you actually do business with. The email will then ask you to click a link and enter your personal information. This is called “phishing” if the link takes you to a third party that steals your password or other sensitive information. In order to prevent this from ever happening to you, do not click links in emails. Instead, go to a new window and log in to the site directly. If the request was legitimate, you will have a note about it in the account that you log in to.

Another suggestion for safe web browsing is making sure you are on a secure connection when doing things online that are private, such as banking or paying bills. Additionally, even if you have an anti virus program already in place, you may want to look for a separate program that scans for ad-ware programs, which are slightly different than a virus.

Filed Under: Security, Software Tagged With: Adware, Anti-Virus, Malicious Software, Personally identifiable information, Security, Spyware, Web browser, World Wide Web

How to Pick the Right Anti-Virus Software for You

If you have ever used a computer, chances are that you have heard of computer viruses. Viruses are created to be malicious and attack other people’s networks and infect other computers and networks in the process. Computer viruses literally spread in a domino type reaction, very similar to how a flu virus continues to spread. Since it is so easy to catch and spread computer viruses, it is important to catch them before they infect anything, or at least catch them as soon as possible.

In order to catch, block, and remove viruses from your computer, you will need to have an anti-virus program in place. There are many of these types of program available, so it is important to know what to look for in a decent anti-virus program. The first thing to note is that price is indicative of quality. There are some really great options available for a free download, that work as well as, if not better than the name brand ones on the market. However, it is absolutely essential that you do research on any anti-virus program before installing it on your computer. It would not be a good thing to download something that is malicious and will attack your computer while it is in its pre-anti-virus defending state.

Some things to consider when choosing which one will work best for you include researching how often the virus definitions are updated, how often the program itself is updated, whether or not the updates are automatic or manual, and whether or not you can program the software to run a scan on a preset basis of your choosing. If the program that best meets your needs does not have the ability to automatically update or run a scan automatically, you can set notifications to yourself in a calendar program so that you remember to do the necessary manual work.

Filed Under: Security, Software