Wednesday, July 3, 2013

Computer Cooling Explained: Fan and Liquid Cooling Systems



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The Principle: Heat Transfer
Your computer has a few "hot spots" which generate more heat than the other components. Typically, these are the processor and power supply, although hard drives and extended video cards are also common culprits. In a closed computer case, you can imagine that the heat of a system builds rather quickly. Out with the hot, in with the cold; your computer needs to transfer heat away from the core components. Heat transfer, in this sense, refers to the conduction and convection processes which allow for the efficient heat exchange between your computer's internal components and the (hopefully) cooler surroundings. There are currently two main methods employed in dealing with computer heat: traditional fan cooling systems and higher end liquid cooling systems.
Traditional Fan Cooling
The same way you blow on your food when it is too hot, fan cooling systems work by running cooler air over the surface of a warmer object. As the air passes over the heated object, some of the energy contained therein is passed off to the atoms of the air through a process called convective heat loss. This is also the driving force behind wind chill. Fans have remained the most popular method of cooling computer systems as they are relatively inexpensive, easy to install, and easy to repair. Oftentimes, a fan system is supplemented further by a heat sink. Computer heat sinks are typically placed on the processor, where conductive heat transfer allows for the heat generated by the computer to be spread out over a much larger surface area. In this way, the effects of convective heat loss are more pronounced, as more cool air can pass over a larger surface.
Liquid Cooling
Liquid cooling is much more efficient than traditional fan cooling, though its primary disadvantage is a higher cost. In terms of efficiency, consider how quickly water cools a hot pan versus leaving it sit at room temperature. Water has a much higher level of thermal conductivity, meaning it can exchange heat at a much higher rate (over 3,000 times as much!) than air. Liquid cooling allows for piping filled with water to be in direct contact with the heated computer component. The water is heated and transferred away from the component, where it circulates out to a radiator, which is in turn cooled by a fan. As you can see, liquid cooling still uses components of traditional cooling. For example, a 41R6039 heat sink in a traditional fan setup is analogous to the radiator and fan of a liquid cooling system. Hopefully this introduction to computer cooling has provided you with the foundational knowledge to understand the function your computer's fan or liquid cooling system serves.


Article Source: http://EzineArticles.com/7827091

Thursday, May 16, 2013

The Benefits Of A Small Computer Mouse



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A small computer mouse can fulfill your needs perfectly. There are some great benefits to using a small mouse, compared to a larger version. This can give you a great alternative to eliminate the many bulky parts that often accompany a computer.
A small computer mouse will often perform all of the same functions as a larger mouse, but you will not have the bulkiness of this mouse. You will be able to store it easily, or carry it with you. If you choose to use a mouse with your laptop, you will be able to put this mouse up when you are done using it. This can make traveling with a mouse very easy.
When you choose a smaller mouse, it may also be a more affordable option. Computer parts can be very expensive; finding opportunities to save can relieve some of this burden. You may find that a smaller mouse can be much cheaper than a larger, standard mouse.
If you have a child that uses the mouse, a smaller version can be much easier for them to utilize. This can be a great way to introduce smaller hands to a computer for a life of learning. There are many great programs online that are made for children that can teach them the basics.
A small computer mouse can be replaced if it breaks without worry. When you do not make a large investment in a mouse, it can be much easier when it comes time to replace your mouse. You may want to upgrade your mouse, or your mouse may no longer function properly.
A small mouse can also come in a variety of different colors. You can find your favorite color in a small mouse version. You will be able to customize your mouse to other computer equipment that you may have. Using colors for computer accessories has become very popular.
You can find that a small mouse will also come in a wireless variety. This can eliminate the use of wires when you are using your computer. A small wireless mouse can also be taken with you on the go easily. This will give you a smaller version, using the latest technology in computer accessories.
When it comes to a small computer mouse you will quickly find out that you have many options. This is a mouse that can be very portable, and allow you to have less bulky equipment when you are using your computer at home.
If you enjoyed this article by Jeff Schuman please check out our understanding your computer website today. You will find helpful information about file management, using a computer mouse and many other things to help you effectively use your computer. http://www.UnderstandingComputerBasics.com


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Thursday, May 2, 2013

Configuring a New Laptop



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There are a lot of things to consider when you are shopping for that laptop, the two most important specifications however are going to be your processor  and your RAM. Here I am going to explain some of the fundamental features of both so you can make a better choice when buying a laptop for yourself.

PROCESSOR (CPU)
Intel the world's largest semi conductor maker has begun the process of transitioning into a quad core line of processors. Their range is branded as Core i3, i5 and i7. If you are hunting for a bargain then you could choose its older Core 2 models, but you would be better off sticking to its latest range.
You could also consider a processor from Intel rival AMD which has a compelling range of products branded as Turion II and Athlon II. If you are a budget shopper then these processes are well worth considering and will serve the purpose for most tasks. The big difference between processors made by AMD is they are simply not as fast as those made by Intel and they tend to act as a drain on battery life.
The most important task is working out exactly how much processing power you need. In general the Core i3 or i5 are suitable for most people. If however you do a lot of video editing then you are going to need a more powerful processor. Gamers in particular believe they need a powerful processor but in practice can actually get away with a slower chip.
Quad core chips still cost a lot and also tend to drain battery life quite quickly. You can identify a quad core chip by the Q denoted next to the machine's model number. If you use your laptop as your main machine, and not taking it out on the road, or you are a gamer or video editor, the quad chip case becomes more compelling.
The decision over processor gets trickier when you are ordering a custom laptop from a manufacturer. You should as a rule avoid the most expensive Chipset on offer and go for the second or third least costliest chips. The increase in price is usually proportional to performance. You should not spend more than $150 upgrading a processor. If you are simply surfing the internet or word processing, even a dual core processor is more than adequate.

MEMORY (RAM)
4GB RAM is the standard memory offered by most manufacturers even on low end laptops and that is really all you need. Starting prices for a laptop with 4GB RAM are just under $500. In the past manufacturers used to make consumers pay through the nose when they upgraded the memory whilst custom ordering. More recently, this practice seems to have changed, and only Apple really still does this.
If upgrading your memory to 4GB costs you less than $90, which is what it costs separately, then you should definitely upgrade. Upgrading beyond 4GB is going to be expensive, and the only real reason to do it is if you are video editing, and even then it's still not absolutely necessary when you compare it against the expense. For a desktop, spending an additional $100 is no big deal, but for a laptop where it is going to cost you an additional $300 for 8GB, it's simply not worth it unless your laptop is your primary video editing device.
ComputerCoupons.com.au provides the latest offers for coupons for leading brands such as Dell and Lenovo. If you are considering the purchase of a new computer then a computer coupon is probably one of the best ways to save money online.


Article Source: http://EzineArticles.com/7401172

Sunday, April 14, 2013

How to Track My Cell Phone



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So, you just come home from your dinner with friends and suddenly you do not know where you put your iPhone. Did you left it at the restaurant or at work? Or probably it is still in your house. You probably fear the worst that someone might have stolen your cell phone. Luckily locating a cell phone is quite easy.
If you own an iPhone, you can always use the Find iPhone apps. First of all you need to download this app to your iPhone. Then you must log in to the app with your Apple account ID. Once activated, the device will share its location. The minimum network requirement for it to track the device is either through GPS signal, 3G, WiFi, or location triangulation via cell towers. What is a location triangulation via cell towers? I will deliberate on this in future post. If you have an iPad or any other Apple devices, you can easily track your iPhone by logging into your account via the find iPhone apps. There it will list all of your devices that are connected to the iCloud. Once it detected your device, it will show the location of your device on a map. You can also have the option of remote triggering the device to omit ringing sound or lock it so that it cannot be used by unwanted parties. Other interesting thing is that you can also follow other people's Apple's devices through your list of contact. Once you select the list of contact you want to follow, it will notify your friends and family that you are following them through the iPhone apps. It is a very neat app and it can also reduce your worries if you lose your iPhone or misplaced them.
Another way for you to track your cell phone is by tracking your phone's IMEI. IMEI stands for International Mobile Station Equipment Identity. It is a unique number for every mobile phone that was manufactured. It has 14 to 15 numbers that represents your mobile phones ID. You can quickly know your phone unique IMEI number by pressing *#06# on your phone keypad. Your phone will instantly show a string of numbers. This number represents the phones IMEI. The IMEI is usually used by GSM operator network to identify whether your phone is a valid device and not a clone one or a stolen one. GSM operator can actually stop the mobile phone that has an IMEI that was blacklisted. So, by blacklisting the IMEI, even though the thief changes the SIM of the phone, it will still cannot be used since the IMEI is unique to the mobile phone itself.
So, make sure to remember your mobile phone's IMEI and store it someplace safe. This will prove to be useful if your mobile phone do get lost. You can immediately use this IMEI number by calling your operator and tell them that your mobile phone got stolen or lost. By giving the mobile phones IMEI number, the operator will block that mobile phone form using the operator's network. This will make the stolen mobile phone render less. But, if you decide locate your mobile phone yourself; there are a number of services or software available on the web. There are also many free software available. You can search the web for other free tracking devices for your mobile number. However, your operator usually can do the tracking for you. Usually your network operator will ask for a police report before they can do the tracking of your mobile phone. So, lodge a police report and then give your mobile phone IMEI to the operator. Once, they have tracked the location of your phone, it is advisable that you should notify the police and let them do their job in retrieving it. Do not put yourself in danger. You will never know how dangerous the thieves might be. Do not get yourself hurt or die just because of a cell phone. Your life is much more valuable. Get some help. The police are the best choice to report to and let them do the job.
Visit http://www.myphonelocater.com for more information on how to track your cell phone. Razamith Sovereign is a General Manager in a technology company, he provide useful advice through his articles that he have found very applicable in managing his daily operation of the company and his daily life.


Article Source: http://EzineArticles.com/7604621

Wednesday, April 3, 2013

Mac or Windows: Choosing Between 2 Computer Operating Systems



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When buying a new computer, there are a number of things you have to consider. Chief among these would be the matter of which operating system (OS) you want to use. This decision determines the type of hardware and software which will be available to you. The 2 most well-known systems available in the market now are Microsoft's Windows and Apple's Mac OSX. Windows is considered to be the industry standard while the Mac OSX is definitely cool, hip, and sleek. So before choosing an OS, it is better to find put the pros and cons of each system.

Windows
Windows remains the dominant operating system in the market. Many businesses opt to use this particular brand. It is definitely the OS to beat, and with good reason. It has the widest array of available apps. It is also important to note that many of these apps are free. It is also compatible with more hardware than any of its competitors. When it comes to gaming, it is the system of choice with many of the popular titles, from Halo to Bioshock, being Windows exclusive.
The downside to this particular OS, however, is that it is the primary target of many viruses and other forms of malware. Unfortunately, this is a negative result of the system's popularity. So, if ever you choose to use this OS, don't forget that you will most probably need a sturdy anti-virus program.

Mac OSX
The Mac is perhaps most well-known for its sleek design and its easy-to-use interface. After being overshadowed by Microsoft's Windows for the longest time, Apple has been steadily gaining ground over the last few years. Appealing primarily to the creative types, it comes equipped with the best audio and video editing software. Easier music creation, photo editing, and video production are among the Mac's strong points. Also, its catalogue of software is continually growing due to the fact that more and more third-party developers are joining Apple's bandwagon.
While Apple controls only a relatively small portion of the OS market, this has actually worked out for them. The OSX rarely becomes the target of viruses and other forms of malware. It is also more secure when compared to its Microsoft counterpart due to its Unix foundations.
Of course, it is important to mention that despite these benefits, there is one downside to the Mac. It is much more expensive than your average PC.
These are just the basic differences between the two dominant systems in market today. It is important to weigh the advantages and disadvantages that come with each system before finally deciding which one you will get.
Jose Victor M. Jayme is a graduate of the University of the Philippines, with a degree in the Social Sciences. He has been working as a freelance copywriter since 2010.


Article Source: http://EzineArticles.com/7593124

Monday, March 18, 2013

Top 5 Computer Mouse Problems And How To Fix Them





This guide will take you through the 5 most common mouse problems along with a quick fix for each problem.
First Things First
Before even attempting to resolve your problem you'll need to do a few initial checks. They are all very easy and take but a few seconds.
1. Change batteries - If your mouse is wireless then change the batteries. Just because the bottom of the mouse is still glowing red and its lights are on and flashing doesn't necessarily mean that it's running low on juice and causing other problems.
2. Clean the mouse - Give your mouse and mouse mate or mouse surface a quick once over with a clean cloth to make sure there are no dust particles affecting it's performance.
3. Unplug and plug back in the mouse - It could be a case of simply replugging in your mouse. This usually fixes most problems.
If you have taken all of these steps and the problem persists then below are the 5 most common computer mouse problems along with the viable solutions.
PROBLEMMouse Cursor Doesn't Move Smoothly
SOLUTIONIf your mouse cursor does not move smoothly then the most likely cause will be either dust in the mouse sensor or dust on the mouse surface, be it a mouse mat or desk. Ensure that you give the mouse a thorough cleaning making sure just to use a clean cloth and no chemicals which are likely to cause more problems.
Another factor which may be causing this malfunction is that a glossy mouse surface is being used. Some mice, especially optical and laser, have difficulties in tracking movement on high gloss surfaces such as glass. Try using a mouse mat instead.
PROBLEM: Mouse Pointer Freezes
SOLUTIONThe most likely cause of this problem will be due to your computers CPU (Central Processor Unit) usage. In this case you may be running more programs than necessary or simply have a lot of background applications open without even realising it. This can potentially be the most annoying as this may mean that your PC is due an upgrade but before committing to this purchase then try these options.
i) Wait a few seconds - The simplest solutions are most often the best. Simply wait a few seconds to see if the problem resolves itself. If the problem persists or repeats itself then further investigation is required.
ii) Close some programs - Some computer programs will keep themselves open in the background without you realising. Look at the bottom right of your Windows Desktop to see if there are any programs still running which you could potentially close.
iii) If all else fails then power off and then power back on to completely clear any unwanted and troublesome background applications or programs.
PROBLEMMouse Not Working At All
SOLUTIONYour mouse not working at all could be from a variety of problems. Some may be software related and some will be hardware related. The mouse not working may be as a result from a loose connection, faulty wiring, a faulty USB or PS/2 port or a faulty IR wireless receiver. Make sure to double check the integrity of your ports when troubleshooting to ensure they are working as expected. Some wireless devices (and some wired) will require a mouse driver to be installed for proper use. Refer to the manufacturer's driver's guideline to make sure it is installed and up-to-date.
If all of this fails then, as usual, unplug and power up your mouse and PC.
PROBLEMMouse Pointer Too Slow Or Too Fast
SOLUTIONThere's only really one solution for this and it's a software configuration issue. This can easily be fixed by going to Control Panel > Mouse > Pointer Options Tab. Change the pointer speed to the desired level by moving the slider up or down until it feels more comfortable.
PROBLEMProblem With Double Click
SOLUTIONAs above this will most likely be a software configuration issue and can be fixed by going to Control Panel > Mouse > Buttons tab. Change the double click speed and test it to a comfortable click speed level.
If all of these solutions fail for your mouse fix then the final option is to purchase another mouse. You can buy a variety of computer mice for many different uses. If you're not sure whether it's the actual hardware (the mouse) or your software then you can pick up a cheap mouse for a few dollars and testing it with this before making a more substantial purchase.
Ryan Smith is the chief author and editor of Computer Mouse Reviews. For help in fixing your computer mouse problems.


Article Source: http://EzineArticles.com/7504390

Friday, March 1, 2013

Amazing Firsts in the History of Computers





A modern computer user accesses video, email, and spam every single day; it's an accepted part of a connected life. The Internet is now a vital part of business, social relationships, and politics; it's impossible to imagine how we ever got along without it. But computer and Internet technology as we know it is still quite new, on a historic scale. While many things are ubiquitous now, they were invented by someone who made the first leaps ahead. Here are some of those firsts in computer history.

The First Webcam
Webcams have revolutionized how we interact with others online, putting a human face onto a medium that was historically confined to text-only communications. Dial-up web connections couldn't possibly handle a live video stream; web browsers didn't gain the ability to display images until 1993. The first web cam was installed at the University of Cambridge in 1991. It showed a still image close-up of the laboratory's coffee pot in the hallway just outside of the "Trojan Room"; the image would display three times per minute and reduce the users monitor resolution to 128X128 grayscale color.
Like many inventions, the webcam was born out of necessity; employees working in other areas of the building would often take a break to get some coffee, only to arrive and find the pot totally empty. Frustrated at having to make frequent and pointless trips, some of the engineers set up a camera, pointed it at the coffee pot, and connected it to a video capture card on an Acorn Archimedes computer. The camera was connected to the Internet in 1993, making it visible to thousands of people online; the Trojan Room coffee pot became an early web celebrity until it was disconnected in 2001 when the computer department moved to a new building on campus.

The First Message
The Internet as we know it today would not exist without ARPANET, the Advanced Research Projects Agency Network. It was the first operational packet switching network, laying the groundwork for how the Internet works today. It launched in 1969 with a network of four small computers called Interface Message Processors, located at University of California Los Angeles, UC Santa Barbara, the University of Utah, and Stanford Research Institute.
UCLA was the first node; Stanford got the second. On October 29, 1969, project leader Leonard Kleinrock supervised UCLA student Charley Kline as he sent the very first host-to-host message from UCLA's SDS Sigma 7 computer to Stanford's SDS 940. The message was intended to be the word 'login', so that UCLA could access the Stanford host. However, the system crashed after sending just the L and the O, one letter at a time; Two simple characters "L & O" ushered in a new era of global communications that would ultimately become part of everyday modern life.

The First Virus
John von Neumann theorized the possibilities of self-reproducing automated programs in 1949, and even designed a theoretical self-replicating computer program. The first true virus, Creeper, was written in 1971 by a BBN Technologies employee named Bob Thomas. BBN was a major player in the field of early computer science, including implementing ARPANET and developing an early operating system called TENEX. Creeper would infect computers running TENEX, then use ARPANET to copy itself into remote systems and display the message, "I'm the creeper, catch me if you can!" This challenge inspired the first piece of anti-virus software, a similarly self-replicating program called Reaper, whose goal was to remove Creeper from infected systems.
Together with his design team, Gary Klingsheim on Facebook, is dedicated to providing distinctive web design services for clients from all areas; creating stunning Social Network, Mobile, E-Commerce websites and more.


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