Network Operating System
Sunday, February 17, 2008
Network Operating System
Friday, February 15, 2008
First we will look at memory. I am talking about system memory or RAM. Before we go further, my associate says I need to write about something more important. That is the peripherals, things like mice, cameras, scanners, printers. For most of these, you will find that there are no Vista compatible drivers available. The chain stores are going to be pushing Vista systems, but be patient and wait for the hardware to catch up. Here is where you will do better talking with your small neighborhood tech shops to find out if your computer will work with Vista.
For those who want to upgrade for Vista, additional memory may have to be installed. RAM (Random Access Memory) is used by the system to run applications. You can never have enough RAM. The current standard has been 512megs. But as the software becomes larger, system resources really become an issue. This is true with the new security suites like Norton or McAfee. Today, I would not consider a system with less then 1gig of RAM. You can run Vista on 512megs, but you would not be able to enjoy all the features and your system may perform very poorly.
To speed up your system and upgrade your RAM, you need to know a few details. You need to find out how much RAM you have, what type/speed, and how much your system will support. To find out how much, go to your START button, right click on My Computer, then select Properties. After the dialog box opens, look down to the bottom right. You will see information for the type and speed of the processor. There will also be a number indicating the amount of RAM installed. It will read 265, 512 or 1024 gigs.
On many of the mass produced machines, there may be an odd number like 448. That is because system memory is shared with the video. To find out the type and how much the system will support, check the system documentation. Check the specs in either the printed materials or check online. Sometimes there are stickers on the front. Look for something that reads like DDR XXX, (DDR400 for example), or PCXXX (PC3200 as another example).
If you have never done this, or are not comfortable opening your computer, you may want to get a service technician to install the RAM. They will still need all the above information. Now we can open the computer and install the memory.
1) Unplug the power on the computer. Most motherboards still are powered, even with the power switch off. So remove the plug completely. Ok, pull the power and unplug everything that is attached to the tower. Mark them if you need to, so you can put them back.
2) Lay the tower on the right side and remove the left side cover. Inside you will see many colored wires and cables. Carefully part these until you can get to the memory slots. They are called DIMM slots. There can be two or more depending on the motherboard. They will be located close to the processor (big metal fins with the fan motor). You will also see the existing memory stick.
3) On each end of the DIMM slots there is a white clip. Make sure they are pushed back to the opened position. Look at your new stick of RAM. You will see 1 or 2 notches. These will match up with dimples in the memory slot. Carefully line up the stick and firmly press it into the slot until you hear it snap into place. Now, secure the two locking clips and you are done.
4) Stand the system back up (leaving the cover off at this point). Plug in the mouse, keyboard and monitor. Plug in the power and fire the system up. One of 2 things will happen. If everything is alright, the system will boot like normal and you can watch the new amount of RAM count up on the screen. If this happens, then you are finished installing the RAM.
The second thing that could happen is the machine starts beeping and will not boot. Do not panic, all this means is that the RAM is not seated correctly. Simply shut it down and unplug the power. Remove the new stick of RAM and reseat it again making sure it snaps firmly into place. You may need to press a little harder than you think. Test the system again by rebooting. Once you are done, replace the cover, put the tower back, and attach all the accessories.
Let me just say again, if you are not comfortable opening and working on your computer then you will be better off letting a technician help you.
By: Chris Kaminski
Article Source: http://www.articlecamp.com
Friday, January 4, 2008
Local Area Networks (LAN)
Metropolitan Area Networks (MAN)
Wide Area Networks (WAN)
Tuesday, January 1, 2008
A network can be any size. For Example, connecting two home computers so they can share data creates a simple network. Companies can have networks consisting of a few dozen computers or hundreds of computers. The Internet is the world,s largest network and connects millions of computers all over the world.
Network users are usually required to identify themselves before they can gain access to the information on a network. This is known as logging on. Each user must enter a personalized user name and password to access a network. By keeping this information secret, users can prevent unauthorized people from accessing the network.
You can use a network to share information with other people. Information can be ant form of data, such as a document created in a word processing program, a picture drawn in an imaging application or information from a database. Before networks, people often used floppy disks or any other storage device to exchange information between computers, which was a slow and unreliable process. With networks, exchanging information between computers is quick and easy.
Computers connected to a network can share equipment and devices, called resources. The ability to share resources the cost of buying computer hardware. For example, instead of having to buy a printer for each person on a network, everyone can share one central printer.
Networks allow people to access programs stored on a central computer, such a s a spreadsheet or word processing program. Individuals can use their own computers to access and work with the programs. By sharing a program, a company can avoid having to install a copy of the program on each person's computer.
Monday, December 31, 2007
For instance, you may search for the so called open source software that can provide you with all the programs you need for your personal computer; this software is normally free when it comes to its usage and all the source codes will also be available for you. These codes are available for every user who is interested in redistributing, modifying or using them for his personal needs. The user can also take advantage of the unlimited freedom when it comes to using these open sources; but they are plenty of people who remain quite reluctant to using the online open sources on a regular basis. The Free software directory is not to be regarded as a menace anymore; on the contrary, you should become fully aware of all its opportunities.
Actually, nothing is likely to come completely free of any charge; even the simplest articles that are used in order to create the web content are not totally free because a company is likely to use them in order to advertise its services or products. However, you will have to learn to appreciate the quality things and you will not have to stay away from a particular directory that can be very helpful for you just because it is free of charge. You will have to learn how to trust the free directories that are offering downloads in order to enjoy things that are not likely to be available forever.
By: Ckint Jhonson
Article Directory: http://www.articledashboard.com
Thursday, December 27, 2007
By: Paul Howe
Article Directory: http://www.articledashboard.com