Tuesday, April 26, 2011

Best Tablet PC And Operating Systems

   If you like to keep up to date with the latest developments in personal computing, you may already be aware that the netbooks that were once the hottest item have now had their status downgraded and replaced by tablet PCs. These small and compact gadgets are already revolutionizing the digital world. If you are planning to purchase one, it would be useful to understand what the best tablet PC is, especially in terms of the operating system used.

   All computers are only as reliable as their operating system. It is the OS which is the engine of the digital device. Though we often place a lot of emphasis on the manufacturers of computers, we should also think carefully about what operating system is used.

   When searching for the best tablet PC, considering the different OS options is essential. Apple are pioneers in the digital entertainment market. The iPad has only been available for a short time and already has sold in millions of units. The iPad uses Apple's iOS, this has proven to be an extremely reliable platform. People of all ages and technical experience are able to use the touchscreen based iOS with the least amount of effort.




Another name that is at the forefront of tablet PC operating systems is Google.
Their Android OS is already found on countless cell phones and netbooks. As Android is open source, it allows for a greater number of PC manufacturers to integrate it into their devices. Android is a lot more customizable than the iOS and therefore will become more widespread in the coming years. Another advantage that Android has over iOS is that is supports Flash and PDF and is more likely to be compatible with future formats.

When discussing computer operating systems, Microsoft will always be mentioned. Their XP OS was one of the first platforms to be used in netbooks. Today, Windows 7 is available in a tweaked and tailored form to work perfectly with the smallest computers. Expect Microsoft to continue to hold a commanding share of the OS market.
   Apart from the above mentioned options, there are other operating systems that can be found on the latest tablet PCs. This is an area in which there is constant research and development. For example, Nokia are soon to release their own platform which they hope will take on a commanding share of the market. They have been working together with Intel on a new OS to be called MeeGo.



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The Types Of Computer Memory


There are many types of computer memory. If you want to upgrade your computer memory, you have to know the different types of memory. Computer memory is an internal storage area that stores data permanently or temporarily. It also affects the speed by which the computer processes the data. Today’s computer has a combination of memory, and not just one type.

Computer memory has four basic types. These are Cache, RAM, Virtual and Hard Drive.

The Hard Drive memory is where you permanently store your data. It contains program files, permanent files, Internet files and files that are saved by the user. The capacity of the Hard Drive memory is measured by gigabytes.
The Hard Drive memory capacity of old computers or laptops starts from 20 gigabytes. Today, most computers come with 360 gigabytes or higher.

The Virtual memory plays its role when running applications that are too large to handle by Random Access Memory or RAM. To temporarily store data, the computer’s Operating System uses the Hard Drive and gives it back when needed. Virtual memory’s usage of Hard Drive slows down the performance of the computer.

Cache memory stores the most frequently used processes of the computer. It has 3 grades to indicate its level. Level 1 and 2 are the most common Cache used in most computers and laptop. Level 3 Cache indicates advanced level of systems.

Level 1 Cache memory is used for most frequently used information and processes. It is the primary memory used by the processor. L2 is next in line. It is more commonly used on the motherboard. Depending on the motherboard used in the computer, the L2 can be upgraded or not. L3 is the most advanced Cache memory as it can speed up the memory.


The RAM or Random Access Memory is the most commonly used memory as every file or application that is processed in your memory needs it. Each time a data or application is requested on your computer, the processor sends the request to your RAM, which then processes and writes it back to RAM. But the data that come and go in RAM are temporarily stored. As soon as the application or program is closed, the files are deleted from RAM.

 RAM has many types. These are the SDRAM, DDR, SIMM, DIMM, SODIMM, and DRAM.

The SDRAM or Synchronous DRAM retains memory and synchronizes with the timing of the computer. It does not need to refresh. It is faster and more expensive than DRAM. SDRAM’s speeds are 66, 100, 133 and 266 MHZ.
DRAM or Dynamic Random Access Memory holds information for a short time and needs to be refreshed every now and then. It is measured by access time and storage capability.

SIMM is Single In-line Memory modules used to store one row of EDO or BEDO or DRAM chips. SODIMM is Small Outline Dual In-line memory module found in notebooks. It is smaller than standard DIMMs. DIMM or Dual In-line memory module contains 2 rows of DRAM, EDO or BEDO chips. DDR or Double Data Rate doubles the speed rate of data transfer.

Before you purchase the computer memory, you have to know the types of computer memory fit for your computer. Memory used in laptops and notebooks are different from memory used in desktop computer.

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Laptop Essential Maintenance


The computer is one of the most important inventions to have taken place in the 20th century, which has grown over several decades contributing to the growth and changes in human learning and behavior. Today the computer is an essential part of human life without which they cannot do their day-to-day tasks.

 This amazing machine has made life easier for most people and contributed to their overall growth. Today almost all household have at least one computer but the most important question that arises here is, if the owner is concerned about the proper maintenance of the machine or not.




 Most people either fail or forget to properly maintain their computer from both internal and external threats that can seriously jeopardize the functioning of the machine. However, with just a few important tips you can effectively maintain your computer and can keep its functioning as good as ever.


Here are a few essential maintenance tips to keep your computer stable and in a perfect condition:

1. Perform a disk clean up for maintaining the speed of your computer. Running regular disk clean up can clean your system of unnecessary data. This step can be done manually or by running the disk cleanup utility in Windows.


2. Running a registry cleaning software can relieve your system from obsolete and corrupt entries in the registry file. A clogged registry can severely hamper the performance of your system and can even cause it to crash. So, it is important to clean your Windows registry at regular intervals.



3. By using an Anti-Spyware program you can clean your system from malicious programs that intend to steal your data and cause your system to log.


4. Viruses are one of the most common and serious threat to computers and using a good updated Anti-virus program will help your computer to rid itself from harmful viruses.


5. Lastly, you need to clear all un-important software installed on your computer as they cause a lot of trouble during the Windows startup process and make the process a rather clumsy one.


By following these simple steps you can effectively shield your computer from all ext/int threats.


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When Buying a New Laptop


The price of laptops has gone down tremendously over the last few years. Not too long ago a decent laptop would easily have set you back a few thousand dollars. These days, you can pick up a good laptop for as low as $500.00 at your local Walmart. But with thousands of laptops to choose from, and more coming out every week, how do you pick the one that’s right for you? Below are 5 tips to help you make the right decision when looking to buy a new laptop.

1). Determine Your Needs

The first step in figuring out which laptop is right for you is to determine your unique needs. Most students for example would place the emphasis on price, portability, and battery life. In that situation you should look for a laptop with a 14- or 15-inch display. A larger screen means a heavier and bulkier laptop, making it more uncomfortable to carry around. Larger screens also deplete the battery at a much faster rate.


Home users on the other hand should look for laptops with much larger displays than the traditional 14- or 15-inch screens. As these systems typically stay anchored to your desk, table, or kitchen – perhaps occasionally being moved from room to room, the emphasis should be placed on improving the overall visual experience and performance. A larger number of USB ports (3-4) would also be helpful in order to plug-in, for example, a mouse, digital camera, printer, and external hard drive.


Business users often need something more rugged; able to withstand the stresses of constant travel. Because of this, a longer warranty plan is much more important. Security is also a concern so a laptop with extra security features is more ideal.



Determining your unique needs will help narrow down your choices considerably and help make the decision of which laptop to buy much easier.

2). A Good CPU Is Key

The CPU is the most important component of any laptop. Not cutting corners in this department is important if you want a good laptop and a good overall experience. For most users, a dual core processor is the best option.

It offers excellent speed and multitasking capabilities with good power consumption. If you’re planning to use your laptop to play video games, edit video, or play HD movies, it would be wise to invest in a more powerful processor such as the Intel Core i7.
Picking the right CPU can be difficult, so do research on the individual processors available to get a better idea of how they will perform with what you’re intending to use the laptop for. When it comes to CPUs, you get what you pay for, so use the price as a guide to help you make the decision but keep in mind that the more powerful processors also consume more battery life as well.





3). Memory Is Very Important

As operating systems and programs continue to use more and more memory, this is not an area you want to overlook. If the laptop is running Windows Vista or Windows 7, then 2GB of memory or more is required for good performance. The 32-bit version of Windows XP, Windows Vista, or Windows 7, can only detect up to 4GB of memory and it’s recommended that you look for a laptop with that much.

However, RAM is cheap and easy to install. You can simply buy less in the beginning and add more if you find that the performance is not adequate. Just make sure that the laptop has a slot available to upgrade. For example, a 2GB laptop with 2 DIMM slots might have two 1GB memory sticks. In that situation you would need to throw one of the memory sticks out in order to add more.

4). Touch It Before You Buy It

These days you tend to find the best prices and deals online. However, before you make the purchase you should try and find a store with the same laptop on display. As with most products, what you see in the advertisement and what you get can be a little different. See if you like the look, shape, and feel in real life as much as in the photos. Do the keys feel nice? Does the screen have problems with glare? Is it heavier or lighter than you expected? Does it feel solid or cheap? You won’t be able to answer these questions by looking at a professionally edited advertisement picture so you need to see the product for yourself first hand whenever possible.


5). Read Reviews Online

This is the most important step. Whatever it is that you’re looking to buy, you should always get a few opinions from other sources, and the internet is the best place to go. Read a few reviews by going to Google and typing in “[laptop name] review” and to see what people have to say. Check out customer reviews from the popular online computer retailers like TigerDirect.com, NewEgg.Com, NCIX.com, etc.



If the reviews give you the green light, then go ahead with the purchase. If you see warning signs then consider yourself lucky to have found out sooner rather than later, and look for something different. Finding little to no information or reviews on a specific laptop is one of the biggest warning signs of all. Unless you like to gamble with your money, you should look for a laptop with some reputation. The last thing you want to do is test out new products at your own expense.

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