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Computer Systems Network Articles |
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Expert Author: Patricia O Connor | Summary Today we live in a fast paced world that requires more things to be done in a shorter amount of time. Multitasking is essential to even possibly get all of these things done in a timely manner and it seems more and more of the tasks you carry out need to be done so on your computer. This is why most people are willing to do whatever they can to speed their computer up and that is when they start to look in to computer memory. A memory upgrade is the easiest way to get your machine running faster and more efficiently. Expert Author: Patricia O Connor | Summary It is commonly accepted that the history of modern computing technology was born out of the code breaking efforts of the Allied forces during World War II. That being said, very few modern computer users ever think about how their computer actually works, much less the journey that technology took to bring them their computer. Instead they email, chat, write, computer, listen to music, and edit photos in blissful ignorance. However, take a moment the next time you are waiting for a page to load and think about not only how your desktop computer works, but how it came out of the government laboratories and into your home. Expert Author: Nasreen Haque | Summary When we talk about a desktop computer, we are referring to a computer that is not normally moved around a lot. Usually it is used in one place for an extended period of time. Desktops are bigger and heavier than laptops. Compared to laptops they used to have superior computing power, but this is no longer necessarily the case. Expert Author: Patricia O Connor | Summary A desktop computer is also known as a PC or personal computer. This type of computer is deigned for use in a single location such as a home or office, as opposed to a laptop or notebook computer which is designed for travel. The first computers were gigantic and took up entire rooms, so with the invention of the first desktop computers, these were considered small in size even though they outsize modern computers considerably. Expert Author: Patricia O Connor | Summary If you have just purchased a desktop computer, you may have opened the box and wondered what next. If you need help in setting up your desktop computer, then try the following steps. Expert Author: Imran Rashid | Summary Accompanying the current Internet revolution, the wireless revolution is also having a profound impact on the way people work and live. Today, more people in Europe have a mobile phone than a PC or a car. Expert Author: Imran Rashid | Summary We attach devices to the Internet because we want to receive/send data from/to the Internet. This includes all kinds of good stuff, including 'Web pages, e-mail messages, MP3s, telephone calls, live video, search engine results, and so on. Expert Author: Imran Rashid | Summary The Internet has become mission critical for many institutions today, including large and small companies, universities, and government agencies. Many individuals also rely on the Internet for many of their professional, social, and personal activities. Expert Author: Imran Rashid | Summary We saw earlier that end systems (user PCs, PDA's, Web servers, mail servers, and so on) connect into the Internet via an access network. Recall that the access network may be a wired or wireless local area network (for example, in a company, school, or library), a residential cable modem or DSL network, or a residential ISP (for example. AOL or MSN) that is reached via dial-up modem. But connecting end users and content providers into access networks -is only a small piece of solving the puzzle of connecting the hundreds of millions of end-systems and hundred of thousands of networks that make up the Internet. Expert Author: Imran Rashid | Summary We can learn a lot by taking a close look at this simple request message. First of all, we see that the message is written in ordinary ASCII text, so that your ordinary computer-literate human being can read it. Expert Author: Imran Rashid | Summary Earlier we said that a muter takes a packet arriving on one of its attached communication links and forwards that packet on to another of its attached communication links. Expert Author: Imran Rashid | Summary You should know enough now to impress your family and friends! However, if you really want to be a big hit at the next cocktail party, you should sprinkle your discourse with tidbits about the fascinating history of the Internet. Expert Author: Imran Rashid | Summary In a typical FTP session, the user is sitting in front of one host (the local host) and wants to transfer files to or from a remote host. In order for the user to access the remote account, the user must provide a user identification and a password. Expert Author: Imran Rashid | Summary We human beings can be identified in many ways. For example, we can be identified by the names that appear on our birth certificates. We can be identified by our social security numbers. Expert Author: Imran Rashid | Summary There are two fundamental approaches to moving data through a network of links and switches: circuit switching and packet switching. In circuit-switched networks, the resources needed along a path (buffets, link transmission rate) to provide for communication between the end systems are reserved for the duration of the communication session between the end-systems. Expert Author: Imran Rashid | Summary We have just learned that network processes communicate with each other by sending messages into sockets. But how are these messages structured? What are the meanings of the various fields in the messages? When do the processes send the messages? These questions bring us into the realm of application-layer protocols. An application-layer protocol defines how an application's processes, running on different end systems, pass messages to each other. Expert Author: Paul R Wilson | Summary I have this IBM Aptiva 572 that was manufactured sometime around 1999. I set it up to run Windows 98. I have been using this machine for quite a while. I use this machine to make audio CDs, make parts of web pages, access the internet, keep track of financial records etc. One day I was moving out and I had held the machine incorrectly. Expert Author: Paul R Wilson | Summary Have you ever had to deal with a computer that does not keep the correct time? Have you ever had a machine that you had to change the time and date every time you turned it on? If this is the case, you probably have a dead bios clock battery. In this article, I will explain how to fix this little nuisance of a problem. Expert Author: Paul R Wilson | Summary More often than not, when executing computer repairs, technicians often play detective. Playing detective generally involves utilization of the process of elimination. It is necessary to eliminate by testing to determine if a component is working correctly in order to be able to focus on the components for whatever reason may not be working correctly. The process of elimination saves time and gets our attention to the critical failure that is preventing the computer from functioning properly. Expert Author: Paul R Wilson | Summary Computer repairs can involve hardware repair, software repair, a combination of both, and or probably some troubleshooting. It's not for the faint of heart; if you are pulling your hair out, you may want to consider doing something else about it like, call the Geek Squad. Basically what we are attempting to get our machine to load properly.
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