Three engineers are riding in a car: an electrical engineer,
a chemical engineer, and a Microsoft engineer. Suddenly
the car stalls and stops by the side of the road. The three
engineers look at each other with bewilderment, wondering
what could be wrong.
The electrical engineer, not knowing much about mechanics,
suggests, "Let's strip down the electronics of the car and try
to trace where a fault might have occurred."
The chemical engineer, not knowing much about electronics,
suggests, "Maybe the fuel has become emulsified and is
causing a blockage somewhere in the system."
The Microsoft engineer suggests, "Why don't we close all
the windows, get out, get back in, open the windows again,
and maybe it will work."
Five Basic Rules for Computer Memory - By: www.Pier55.com
All computers possess the ability to store information in its memory, also called Random Access Memory, or RAM. Some computers can hold small amounts of stored data in the memory and others have the ability to store massive amounts of information. Whether looking at memory for your next computer or trying to improve the memory on an existing computer, there are five basic rules for memory.
Knowing about RAM is the first rule for computer memory. Random access memory is a type of computer storage that allows files and information to be used. This process allows quick access to data that programs use. Most computer users have a version of Windows, such as Windows 95 or Windows XP as their operating system. Those who have Mac programs use another operating system. When looking at RAM for your computer, it is important to look at the size. Most computers users need a minimum of 128 MB. However, the larger the MB size, the better the computer will operate.
New computers with newer versions of Windows will need a higher RAM to run smoothly while an older version of Windows will require less RAM. Also, while a minimum amount of RAM will allow the system to operate, it may not perform at as well as it should.
Another rule to remember when thinking about computer memory will be to become familiar with cache and how cache works. Cache, pronounced cash, is a special type of high-speed memory. The cache is a buffer between the processor and the main memory. It will send data into the processes. This allows the computer to do the same functions over and over again. When the computer is called on to retrieve data, it will search the internal cache first. If the information is not found in the cache, it will search in the external cache chips next and then in the RAM last.
A cache holds all redundant information to save memory space and help the computer increase the speed. When the computer becomes slow, it is often recommended to clean the cache files and cookies that have been stored. By clearing space from these places, it allows the computer to process information faster. When it cannot locate the information in the cache, it will look in external cache chips and in the RAM. An example of how cache works is when a page on the Internet has been stored into the computer. This allows the user to go back to the last page or forward to the next.
Knowing what makes a computer work fast is another good rule for computer memory. Megahertz (MHz) is the speed measuring how fast a computer can think. Computers come in a wide variety of megahertz. This measurement of chip performance is expressed as millions of cycles per second. The higher MHz a computer has, the faster it will run. This directly affects how fast the computer can operate computers and commands. Some speeds on computers are measured in gigahertz (GHz). Gigahertz is measured in billions of cycles per second. One GHz is the same as 1000MHz. Computers with GHz are often used with programs that use multimedia applications.
The last two rules of computer memory involve keeping the computer's memory clean and free to store more information and updating memory. Computers take a lot of memory to keep going. Storing too much information on a system is the number one way to slow the computer down. Having too much stored in the memory bogs the computer down and will often cause computers to crash as well. When a computer becomes slow, it is often necessary to clean the computer's memory by defragging the system or deleting unnecessary files and programs.
Computer users can find out how much memory their computers have by checking the system control panel in Windows. That information can be located in the About This Computer menu on a Mac. This can also tell the user how much RAM the computer can handle and what type of memory and the speed of the RAM. New memory for an older computer can be updated easily and inexpensively if more is needed.
Most computer technicians can install more memory into the computer with minimal cost. When looking to hire someone to install computer memory it is recommended to purchase upgraded RAM from a vendor that gives a good guarantee. Make sure to back up all files on a disk before having the memory upgraded
At the end of 2000, according to International Data Corp. (IDC), about half of all U.S. households had a computer, and more than 20 million of those had more than one computer. In fact, market research shows that current PC owners are buying most of the new computers. This means that multi-computer households are becoming pretty common.
If you are one these multiple-PC owners, you have probably thought about how great it would be if your computers could talk to each other. With your computers connected, you could:
Share a single printer between computers
Use a single Internet connection
Share files such as images, spreadsheets and documents
Play games that allow multiple users at different computers
Send the output of a device like a DVD player or Webcam to your other computer(s)
Ten Tips to Keep your PC Up and Running - By: www.MrWebb.com
The last thing you need is a frozen computer, which will happen if your computer is not properly protected against viruses, worms and Trojan horses. Deep freezes can cost you precious time and a lot of money that you won't have to spend if you follow these ten tips to keep your PC up and running.
1. Anti-virus software is a must have for all computer users.
If you don't have any anti-virus software on your computer right now, then stop reading and go get one right away. Not only do you have to install the software, you need to keep up with the updates. Everyday, new viruses, worms and other threats emerge and seek out those unsuspecting vulnerable computers. The two most popular anti-virus software packages are McAfee Virus Scan and Norton Anti-Virus. These packages can range from $35 to $60, but they are well worth it. There will also be smaller annual fees for ongoing subscriptions to these services.
2. Watch for suspicious emails.
You may think you're getting an email from a friend, maybe the email has a tempting file attached, so you click on it. Then before you know it, you've just infested your computer and any machines attached to it with a severe virus. You can loose files and even affect everyone in your address book. This is not a good way to make friends and this will most certainly ruin your day.
3. Avoid any websites that require you to download any software in order to be able to view a page.
Unless it's software like Acrobat Reader or Flash Plug In, or some other well known software. You may be downloading a Trojan horse or some other virus. Never install any software unless you are confident it's coming from a reliable source.
4. Spyware can secretly install itself into your computer without you knowing about it.
This can happen when you are downloading software. Pop-ups can follow close behind these spyware programs. You can install a tool such as Ad-aware or StopZilla to help prevent spyware from being downloaded into your computer and to block all those nasty pop-ups.
5. Smite the spam!
These unsolicited emails are annoying and such a nuisance. Spam is also a prime source of virus infections and other threats to your computer. Spam catching programs can be obtained from McAfee Spam Killer 5, Norton Anti-Spam and I Hate Spam. These can be purchased from $20 to $50.
6. Security patches.
Holes do occur in security software from time to time. That's where the security patch comes in, to patch it up and make it safe again. Always update your security program on a regular basis and install any security patches as they become available.
7. Use your discs.
It's always a good safety measure to have all your valuable information backed up on disc. Bad things happen to good people, and if your computer contracts a virus, you are at risk of losing everything you have. And unless you only use your computer to play video games on, you really need to save your data onto disc. I can not emphasize this enough!
8. Beware of hoaxes and fraudulent emails.
Never believe everything you read. There are too many people out there trying to scam you out of your money. Once they have all your personal information, they can take you for all you're worth. Never freely give out your personal information and most definitely not any of your financial information to those who ask. Unless it's a website that you are familiar with or have had transactions with in the past, buyer beware.Â
9. Install a firewall.
A firewall is almost impossible for hackers to figure out, therefore keeping you safe in all your internet endeavors. You can find these firewalls for free or you can purchase them. However you choose to acquire one, just get one, because you do need it.
10. Back up your files on a regular basis.
Whether you fall victim to a hacker, worm, Trojan horse or some other virus, you will want to create a means of escape with minor damage. If you don't back up your files, well, you must be a glutton for punishment.
Spywarecan definitely wreak havoc on your computer system. Your computer could be working fine one day at peak performance and with no problems and then the very next day, suddenly you log on and it takes forever to load your basic operating system. When you finally get logged on and online, you notice how slow things seem to be moving. Pages on the web are taking forever to load and you're getting pop-up windows filled with advertisements. Your homepage is different and filled with more advertisements. You suddenly get a new pop up window with a pornographic image in it. You shake your head wondering what's going on. It's as if your computer has been taken over by someone else.
Well, it has. A spyware program has invaded your machine. It has snuck its' way into your system through several possibilities. Here are a few things it might be doing.
It might be scanning your computer cache for information such as websites you've visited and things you've purchased online so it can sell this information to marketing companies. It may be searching through instant messaging transcripts to find out personal information about you. It could be sending out copies of every file on your personal computer including family photographs and personal documents and e-mails you've written and received. If this isn't your home computer but a company computer, it could be sending out confidential information that your company has under non-disclosure. Spyware is resetting your homepage so that you'll hopefully click on one of the links on that page to earn the Spyware publisher some affiliate marketing money. The Spyware is waiting until you go online to check your bank balance or pay some bills so it can send your banking or credit card information to someone.
Spywarepreys on computer users and uses the resources on your computer to do its' damage. What can you do about this problem? You can run an anti-spyware program and eradicate that malicious software from your computer and stop future such programs from doing the same thing.
Why should you purchase anti-Spyware software when many programs exist for free? Some Spyware publishers disguise their programs as Anti-Spyware when really, they're just Spyware themselves. You're careful about your privacy in real life with locking doors, closing curtains on your window and other precautions. You need to be just as vigilant with your online activities.