Computerday Part Difference
Difference Between SD, DDR, DDR2 and DDR3 RAM Explained
SD, DDR, DDR2 and DDR3 are all different types of RAM (Random Access Memory). RAM is a kind of computer memory that temporarily stores information, improving your systems performance. Or in other words RAM simply holds data for the processor. The processor also has its own memory known as the L2 cache, the cache lies between the processor and the RAM. The processor sends and retrieves data from this cache, when this cache overflows data is sent to the RAM.
There are mainly four types of RAM; SD, DDR, DDR2 and DDR3. They differ in the way they operate and mainly in their operation speeds. All RAM's used in computers today have a synchronous interface meaning they wait for a clock signal before it can respond to clock signals.
SD RAM:
SDRAM stands for synchronous dynamic random access memory. SDRAM is Single Data Rate meaning that SDRAM can accept one command and transfer one word of data per clock cycle. As mentioned above SDRAM's have synchronous interface therefore they depend on the computer clock signals to perform operations. Typical speeds of SDRAM are 100 and 133 MHz.
DDR SDRAM:
DDR SDRAM stands for double data rate synchronous dynamic random access memory. DDR RAM transfers data twice per clock cycle, hence the name double data rate. DDR clock speeds range between 200 MHz (DDR-200) and 400 MHz (DDR-400). DDR-200 transfers 1600 MB/s, while DDR-400 transfers 3200 MB/s.
DDR2 SDRAM:
DDR2 SDRAM stands for double data rate 2 synchronous dynamic random access memory.DDR2 is twice as fast as DDR which means twice as much data is carried to the module for each clock cycle. Also due to the design improvements DDR2 consumes less power as compared to the DDR memory. DDR2 speeds range between 400 MHz (DDR2-400) and 800 MHz (DDR2-800). DDR2-400 transfers 3200 MB/s. DDR2-800 transfers 6400 MB/s.
DDR3 SDRAM:
So by now after reading the above it is quite obvious what DDR3 SDRAM stands for, double data rate 3 synchronous dynamic random access memory. In theory DDR3 is supposed to act twice as fast as DDR2 memories. Thus DDR3 speeds range between 800 MHz (DDR3-800) and 1600 MHz (DDR3-1600). DDR3-800 transfers 6400 MB/s; DDR3-1600 transfers 12800 MB/s.
Only gamers may notice the difference between DDR2 and DDR3 speeds, while for everyone else, even DDR will be sufficient. But if you are buying a new PC spending a little extra for the increased speed is always appreciated.
But in the end it all depends on your requirements and your budget. DDR3 will cost a lot more than DDR2, also for DDR3 speeds you will also need a motherboard that can support it, so if you are planning on upgrading your RAM to DDR3 you should be certain that your motherboard can support it. If your requirements do not involve heavy gaming or video editing and video processing then you have no need for the powerful DDR3 memory.
Custom Search
วันเสาร์ที่ 4 ตุลาคม พ.ศ. 2551
วันจันทร์ที่ 25 สิงหาคม พ.ศ. 2551
Computerday Part Optimization
Computerday Part Optimization
The Basics of Search Engine Optimization
Search engine optimization is a practice that is employed to promote a website’s presence on the Internet. The main aim of search engine optimization is to get the website among the first rankings on search engine result pages for any specific keyword or group of keywords. It is an area of the Internet that has been receiving an increasing amount of attention due to the competitiveness within the industry and the possible financial rewards associated with ranking on the first page.
How Search Engine Optimization Works
The basic premise of search engine optimisation is based on submitting a website to a search engine to include it (the website) in the search engine listings. However as the competitiveness of the industry grew, search engines have become more advanced by employing algorithms through which they rank the pages on the Internet. This has led to an explosion in techniques (both legitimate and some less so) employed by individuals and companies to promote their own organizations or those of their clients.
One of the key concepts that requires understanding when thinking in terms of search engine optimization is that search engines like Google base their algorithms on business principles which means that the client comes first – those people sitting behind their computers diligently wading through the search results to find the data they are looking for. And to add a bit more of complexity to this practice, keep in mind that the world of Internet technologies is an ever expanding one. It’s an industry driven with the idea of providing users with the most accurate and current information related to their search queries. Where once search engine optimization relied on a couple of straight forward strategies, it has now developed into a science.
Algorithms in Search Engine Optimization
Whenever you read or speak about search engine optimization, you’ll probably hear about algorithms. These are ‘formulas’ that are used to determine which pages are more relevant to the user. Things taken into account include the amount of recurring words on a page and whether they have any relation to one another and whether they refer to any particular industry or subject of human interest. To make things more interesting, especially for those in the search engine optimization industry, search engines have now started to store web users’ search results to determine which pages have been visited previously with the aim of updating subsequent searches for the same terms with new pages and pages with updated content. This leads to another field of search engine optimization called article submission and blog submission, all of which aim to cater for this search engine requirement by regularly submitting updated content to those websites that act as repositories.
Search engine optimization is an area of the Internet that will keep evolving with the addition and amendments of algorithms and technologies that all aim to provide the user with a comfortable and convenient web experience. It is also a field of interest that passively promotes free and accurate information to make it as comprehensive as possible. The only question that remains is whether the techniques employed for search engine optimization will continue to rely on human ability or whether this role will be sooner or later become automated.
By remy na
The Basics of Search Engine Optimization
Search engine optimization is a practice that is employed to promote a website’s presence on the Internet. The main aim of search engine optimization is to get the website among the first rankings on search engine result pages for any specific keyword or group of keywords. It is an area of the Internet that has been receiving an increasing amount of attention due to the competitiveness within the industry and the possible financial rewards associated with ranking on the first page.
How Search Engine Optimization Works
The basic premise of search engine optimisation is based on submitting a website to a search engine to include it (the website) in the search engine listings. However as the competitiveness of the industry grew, search engines have become more advanced by employing algorithms through which they rank the pages on the Internet. This has led to an explosion in techniques (both legitimate and some less so) employed by individuals and companies to promote their own organizations or those of their clients.
One of the key concepts that requires understanding when thinking in terms of search engine optimization is that search engines like Google base their algorithms on business principles which means that the client comes first – those people sitting behind their computers diligently wading through the search results to find the data they are looking for. And to add a bit more of complexity to this practice, keep in mind that the world of Internet technologies is an ever expanding one. It’s an industry driven with the idea of providing users with the most accurate and current information related to their search queries. Where once search engine optimization relied on a couple of straight forward strategies, it has now developed into a science.
Algorithms in Search Engine Optimization
Whenever you read or speak about search engine optimization, you’ll probably hear about algorithms. These are ‘formulas’ that are used to determine which pages are more relevant to the user. Things taken into account include the amount of recurring words on a page and whether they have any relation to one another and whether they refer to any particular industry or subject of human interest. To make things more interesting, especially for those in the search engine optimization industry, search engines have now started to store web users’ search results to determine which pages have been visited previously with the aim of updating subsequent searches for the same terms with new pages and pages with updated content. This leads to another field of search engine optimization called article submission and blog submission, all of which aim to cater for this search engine requirement by regularly submitting updated content to those websites that act as repositories.
Search engine optimization is an area of the Internet that will keep evolving with the addition and amendments of algorithms and technologies that all aim to provide the user with a comfortable and convenient web experience. It is also a field of interest that passively promotes free and accurate information to make it as comprehensive as possible. The only question that remains is whether the techniques employed for search engine optimization will continue to rely on human ability or whether this role will be sooner or later become automated.
By remy na
วันพุธที่ 13 สิงหาคม พ.ศ. 2551
Computerday Part Motherboard
Computerday Part Motherboard
It Starts With A Motherboard
By: Victor Epand
It all starts with a motherboard when talking about computers. Simply put, this is a vital organ for all computers much the way our organs are in our own bodies. Technically, it is a primary printed circuit board that can be found in a complex electronic system. A better example of a complex electronic system known to pretty much everyone is the computer.
The motherboard has several other names, proving Shakespeare's theory that a rose by any other name would indeed smell as sweet. Known as a main board, baseboard, system board, planar board, logic board, and mobo, this is one pc supply that can't be skipped when building your own computer. It also means that a memory lapse may not mean that you can't get the part. I've seen techs recognize even the most bumbled explanations of what is wanted because of the vital nature of this component of computers.
The simplest of motherboards include sockets, slots, chipset, non-volatile memory chips, clock generator, and slots for expansion cards, power connectors, and circuits. Each of these is a necessary component that works together in tandem to be the brains of your computer. Sockets are the holders of the microprocessors as this is where they are installed. Slots hold the computers main memory while chipsets form an interface between the computer's busses and the main memory. Non-volatile memory stores the firmware for the computer and the BIOS, which is necessary to boot the computer. The clock generator is responsible for the system clock signal and synchronization capabilities while slot expansions interface through the busses. The power connectors receive the electrical power that makes all of the motherboard come alive.
As you can see, this one piece of equipment is vital to building a computer. No computer can operate without one. Because of the integral role of the motherboard, it is not surprising that the motherboard should be carefully chosen. Not all motherboards are created equal. Not all motherboards will work for all operating systems. These are unique pieces of equipment that your computer needs to operate and they need compatible components to work with them. If you build a motherboard for XP, for example, and you load Vista, you will probably have a problem that shows up as a silent computer regardless of your sound card choice. You would likewise see difficulties if you load a computer whose motherboard is compatible with Mac Leopard system with Linux or Windows. It simply won't work to your advantage.
When you begin shopping around for motherboards, it is important to know a little about what you want from the computer you are building as well as the operating system you plan to install on it. Upon investigating further, you should tell your sales representative about your must haves for the motherboard since this is the center of activity for your computer. This will help them help you get the perfect motherboard for your dream computer and at a cost that fits into the total budget that you have set for your project.
It Starts With A Motherboard
By: Victor Epand
It all starts with a motherboard when talking about computers. Simply put, this is a vital organ for all computers much the way our organs are in our own bodies. Technically, it is a primary printed circuit board that can be found in a complex electronic system. A better example of a complex electronic system known to pretty much everyone is the computer.
The motherboard has several other names, proving Shakespeare's theory that a rose by any other name would indeed smell as sweet. Known as a main board, baseboard, system board, planar board, logic board, and mobo, this is one pc supply that can't be skipped when building your own computer. It also means that a memory lapse may not mean that you can't get the part. I've seen techs recognize even the most bumbled explanations of what is wanted because of the vital nature of this component of computers.
The simplest of motherboards include sockets, slots, chipset, non-volatile memory chips, clock generator, and slots for expansion cards, power connectors, and circuits. Each of these is a necessary component that works together in tandem to be the brains of your computer. Sockets are the holders of the microprocessors as this is where they are installed. Slots hold the computers main memory while chipsets form an interface between the computer's busses and the main memory. Non-volatile memory stores the firmware for the computer and the BIOS, which is necessary to boot the computer. The clock generator is responsible for the system clock signal and synchronization capabilities while slot expansions interface through the busses. The power connectors receive the electrical power that makes all of the motherboard come alive.
As you can see, this one piece of equipment is vital to building a computer. No computer can operate without one. Because of the integral role of the motherboard, it is not surprising that the motherboard should be carefully chosen. Not all motherboards are created equal. Not all motherboards will work for all operating systems. These are unique pieces of equipment that your computer needs to operate and they need compatible components to work with them. If you build a motherboard for XP, for example, and you load Vista, you will probably have a problem that shows up as a silent computer regardless of your sound card choice. You would likewise see difficulties if you load a computer whose motherboard is compatible with Mac Leopard system with Linux or Windows. It simply won't work to your advantage.
When you begin shopping around for motherboards, it is important to know a little about what you want from the computer you are building as well as the operating system you plan to install on it. Upon investigating further, you should tell your sales representative about your must haves for the motherboard since this is the center of activity for your computer. This will help them help you get the perfect motherboard for your dream computer and at a cost that fits into the total budget that you have set for your project.
วันพฤหัสบดีที่ 7 สิงหาคม พ.ศ. 2551
Computerday Part Antivirus
Welcome to my Computerday blog Again.Here you will learn about Computerday tips and how to find good information
How Antivirus Software Protects Your Computer
Its getting harder everyday to protect your data from the dangers posed by computer viruses. These malicious programs have evolved into multiple forms and can be contracted through a variety of ways, including opening email attachments, opening spam or by visiting corrupt websites.
Fortunately, just as viruses have grown in strength and complexity over the years, so also have the tools used to combat them. With the latest generation of antivirus software, you can give your computer a level of protection never before possible. Todays best antivirus software come with multiple virus scans, allowing you to schedule scans in advance, giving you access to a variety of location-specific scans and even real-time scanning, which scan your computer every few minutes for viruses stopping them before they can do damage.
Since new viruses are being created everyday, the most effective antivirus programs offers convenient virus updates. Most antivirus software offers automatic updates which regularly and automatically check back with the manufacturer for information on new viruses, providing you the highest-level of protection at all times. However, undeniably, the most valuable thing that todays antivirus software brings to its consumers is plain, good-old-fashion peace of mind.
What to look for in Anti-Virus Software. Top anti-virus software should be easy enough for a computer novice to both use and install. The software should effectively seek out and identify virus threats, as well as clean or isolate infected files. There should be understandable reporting available for each scan and plenty of help support available, so you can be well informed of the softwares activities and capabilities.
Ease of use exceptional anti-virus software is simple to use, regardless of a persons computer experience or knowledge of viruses. Effective at identifying viruses and worms The best anti-virus products identify infected files quickly through real-time scanning, searching for viruses in a multitude of sources, including email, instant message applications, web browsing and so on.
Effective at cleaning or isolating infected files. Truly capable anti-virus software thoroughly cleans, deletes or quarantines infected files keeping them from spreading throughout the hard drive or network.
Activity reporting anti-virus programs should give immediate notification of viruses found by real-time scanners and should provide an easy-to-read report of scan results, including what it found and what it did with infected files.
Feature set a well-rounded feature set allows anti-virus software to provide absolute protection. The best programs are those that offer a wide variety of tools, from basic real-time scanning to more advanced, heuristic scanning and script blocking when it comes to virus protection, the more options the better.
Ease of installation and setup anti-virus programs should be a breeze to install, making it easy to go from installation to initial scan in just a couple clicks of the mouse.
Help documentation high-end anti-virus software come with plenty of help, including support via email, online chat or over the telephone. There should also be online resources, such as knowledge bases and FAQs available for quick and convenient help.
How Antivirus Software Protects Your Computer
Its getting harder everyday to protect your data from the dangers posed by computer viruses. These malicious programs have evolved into multiple forms and can be contracted through a variety of ways, including opening email attachments, opening spam or by visiting corrupt websites.
Fortunately, just as viruses have grown in strength and complexity over the years, so also have the tools used to combat them. With the latest generation of antivirus software, you can give your computer a level of protection never before possible. Todays best antivirus software come with multiple virus scans, allowing you to schedule scans in advance, giving you access to a variety of location-specific scans and even real-time scanning, which scan your computer every few minutes for viruses stopping them before they can do damage.
Since new viruses are being created everyday, the most effective antivirus programs offers convenient virus updates. Most antivirus software offers automatic updates which regularly and automatically check back with the manufacturer for information on new viruses, providing you the highest-level of protection at all times. However, undeniably, the most valuable thing that todays antivirus software brings to its consumers is plain, good-old-fashion peace of mind.
What to look for in Anti-Virus Software. Top anti-virus software should be easy enough for a computer novice to both use and install. The software should effectively seek out and identify virus threats, as well as clean or isolate infected files. There should be understandable reporting available for each scan and plenty of help support available, so you can be well informed of the softwares activities and capabilities.
Ease of use exceptional anti-virus software is simple to use, regardless of a persons computer experience or knowledge of viruses. Effective at identifying viruses and worms The best anti-virus products identify infected files quickly through real-time scanning, searching for viruses in a multitude of sources, including email, instant message applications, web browsing and so on.
Effective at cleaning or isolating infected files. Truly capable anti-virus software thoroughly cleans, deletes or quarantines infected files keeping them from spreading throughout the hard drive or network.
Activity reporting anti-virus programs should give immediate notification of viruses found by real-time scanners and should provide an easy-to-read report of scan results, including what it found and what it did with infected files.
Feature set a well-rounded feature set allows anti-virus software to provide absolute protection. The best programs are those that offer a wide variety of tools, from basic real-time scanning to more advanced, heuristic scanning and script blocking when it comes to virus protection, the more options the better.
Ease of installation and setup anti-virus programs should be a breeze to install, making it easy to go from installation to initial scan in just a couple clicks of the mouse.
Help documentation high-end anti-virus software come with plenty of help, including support via email, online chat or over the telephone. There should also be online resources, such as knowledge bases and FAQs available for quick and convenient help.
วันอาทิตย์ที่ 3 สิงหาคม พ.ศ. 2551
Computerday Part Training
Computerday Part Training
Computers Training Can Make Your Life Easier
By: INDERMOHAN
It is not that you need to know the computer for your official purposes only; even you will feel its need in several other circumstances too. Therefore it will be worthwhile to know about the several types of computer training and its impact and usefulness in our life. Training in the computer can be of various types and there are different types of procedures for approaching it. Generally the term computer training comprises everything related to the computer as a whole. This training consists of lessons on the various parts of the computer, their functions and necessities and then the manner to compute or run the computer.
Also the content of this kind of computer trainings are based on the term or duration of the training procedure. For example, the duration of the course can be of a few months or of years and based on it the syllabus is designed. In the short term computer training classes, the emphasis is put on making the student aware of the general and basic computer term and a basic learning is provided with which the primary computer functions can be done. This type of training mainly includes the office package in it where the learner is trained on the MS-Word, Excel and PowerPoint. Whereas in the long term courses, which runs for at least a year, the training is given on every function of the computer including the hardware, software and networking with greater emphasis. The course fee of these types of training varies from each other based on the term and contents of it. That means the fees for a short term course, for example, of a three months course is less than that of one year course. Anyone can approach these computer trainings but for certain special courses some special educational qualifications are essential.
The importance of the computer training is rapidly increasing as it is required in each and every field in this fast growing world. Even the housewives too need to know the basics of the computer if they want to be an efficient home manager. Shopping, cooking, cleaning everything has become computerized nowadays. Even for guiding the little one in their school homework, the mother should have the primary computer knowledge. Keeping in mind this vital role of the computers numerous computer training institutions have opened up where any class and any age group can get admitted and take lessons. Also, the online computer training courses have made this procedure far more easy and accessible for the learners. Those who are very busy and find it tough to manage time for rushing to the institutes have been helped to a great extent by this online computer learning system. Thus the invention of the computer and an adequate knowledge on it has very well, converted the world into a global village.
Computers Training Can Make Your Life Easier
By: INDERMOHAN
It is not that you need to know the computer for your official purposes only; even you will feel its need in several other circumstances too. Therefore it will be worthwhile to know about the several types of computer training and its impact and usefulness in our life. Training in the computer can be of various types and there are different types of procedures for approaching it. Generally the term computer training comprises everything related to the computer as a whole. This training consists of lessons on the various parts of the computer, their functions and necessities and then the manner to compute or run the computer.
Also the content of this kind of computer trainings are based on the term or duration of the training procedure. For example, the duration of the course can be of a few months or of years and based on it the syllabus is designed. In the short term computer training classes, the emphasis is put on making the student aware of the general and basic computer term and a basic learning is provided with which the primary computer functions can be done. This type of training mainly includes the office package in it where the learner is trained on the MS-Word, Excel and PowerPoint. Whereas in the long term courses, which runs for at least a year, the training is given on every function of the computer including the hardware, software and networking with greater emphasis. The course fee of these types of training varies from each other based on the term and contents of it. That means the fees for a short term course, for example, of a three months course is less than that of one year course. Anyone can approach these computer trainings but for certain special courses some special educational qualifications are essential.
The importance of the computer training is rapidly increasing as it is required in each and every field in this fast growing world. Even the housewives too need to know the basics of the computer if they want to be an efficient home manager. Shopping, cooking, cleaning everything has become computerized nowadays. Even for guiding the little one in their school homework, the mother should have the primary computer knowledge. Keeping in mind this vital role of the computers numerous computer training institutions have opened up where any class and any age group can get admitted and take lessons. Also, the online computer training courses have made this procedure far more easy and accessible for the learners. Those who are very busy and find it tough to manage time for rushing to the institutes have been helped to a great extent by this online computer learning system. Thus the invention of the computer and an adequate knowledge on it has very well, converted the world into a global village.
วันอังคารที่ 29 กรกฎาคม พ.ศ. 2551
Computerday Part Recovery
Computerday Part Recovery
Hard Drive Recovery for Your Valuable Data
By: fortunewords
The most valuable assets of a company or an organization reside in files on computer hard drives. This is the main storage element in the system. In many cases the electronic evidence on the hard drive requires special skill and experience in data recovery to identify and retrieve the data. The current crisis of the system can be attributed to a number of factors, such as the inability to access a hard drive especially when back-ups are not available.
Hard drive crashes, Virus attacks or losing your valuable files through accidental deletion can be quite disturbing in your work. Unfortunately the data loss caused by such a failure will lead to financial losses in an organization, as well as to personal life. If the data disaster caused by a hard drive failure is not immediately managed properly, then the data loss can become permanent.
Hard drives are mechanical magnetic storage devices that are extremely susceptible to failure such as head crashes, circuit board shorts, electrostatic shocks, power surges, overheating, etc. To a major extent power failure could damage the hard drive. While Power surges and sags damage hard drives to crash and corrupt Windows systems, databases and other programs and services which need safer shutdown. Unless you have good surge protectors, UPS and backup generators, you can’t always believe to have good and safe data.
Hard drive crashes and Disk Failures in general can be broadly classified into five categories they are
* Firm ware corruption
* Electronic failure
* Mechanical failure
* physical corruption
* Logical corruption.
Like other software, firmware can have bugs. When powered on, if the hard disk spins up and is not recognized by the computer then it can be altered as firmware failure. Sometimes the computer will properly recognize the hard drive spin up, but during boot up process it just hangs up before it starts up. The hard disk firmware is soft and corruption in it will not allow the computer to interact with the hard disk. The data in the disk could be recovered if the repair in the drive is rectified and reprogrammed. Recovery requires small level of programming and manipulation of the hard drive.
An electronic failure problem is based on the controller board of the actual hard disk failure where the computer power supply also acts as a source of fluctuations on the hard disk.
Mechanical hard disk failures are due to components internal to the hard disk itself. The data on the hard disk will become inaccessible as soon as an internal component goes wrong .This can be diagnosed, when the system is powered ON it makes a tickling sound. Do not attempt to open a hard disk if you suspect a mechanical fault because there is also a chance that you will destroy any chance of successfully recovering the data. Most common in recovery is unusual disturbing, which a hard disk recovery specialist alone could handle.
When your hard drive is making a ticking or a scratching noise due to bad parts, head crash, water damaged hard drive, and fire damaged hard drive can be caused and will indicate a physical failure. The aperture arm in the hard drive can fail motors or the platters can become damaged and lose the data that they hold.
In case of logical crash the damage is caused by the user such as invalid entry in file allocation, accidentally formatting the drive, loss of file system on a fragmented drive.
Of all these crashes you either need a hard drive recovery specialist or hard drive recovery software where hard drive recovery can work on all kinds of damages.
วันจันทร์ที่ 21 กรกฎาคม พ.ศ. 2551
Computerday Part Laptop
Computerday Part Laptop
Getting a New HP Computer
By: Joe Flips
Getting a new computer or laptop can bring up issues for most. If you have a career or business in which computers are an integral part, you may not have any problem choosing one that is right for you. This may not be the case for everyone else, though. What is important when looking for a new computer is firstly to know what features you want, and then to look around for the best deal and a brand you can trust.
After checking out many different makes and models of laptop, I finally choose a HP computer, a Pavilion laptop, and have been very satisfied with it.
I have had the laptop for just over a year and really have no complaints about my purchase. The one issue I did have was a common problem for HP computers. My power cable gave up. With that said, HP support did move very quickly to rectify the issues and I was sent a new one free of charge a couple of days later.
Many other brands aren't reliable and don't have such great support. HP computer this is definitely not the case. The seldom go wrong and when they do, they sort it out very quickly indeed.
Customer service wasn't actually a factor in choosing a HP computer though. What got me was that they are incredibly well priced for the features you get with them. Other machines I looked at were more expensive and had less programs installed. We all use our computers for different things so being able to cater for every one is an important factor.
HP computers have something for all. It was not very hard for me to choose what model I wanted. They were all pretty much the same except for memory capacity and processor speed, which can vary.
You can choose another model if a HP computer doesn't have a feature you require. I don't think that will be the case and if you talk to someone who has one I am sure you would get a good recommendation from them.
With their track record and my personal experience, I can honestly say that I am glad I bought a HP computer. It has been a great servant
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