Archive for January, 2012
Top 10 Best Desktop Computers
Posted by admin in Desktop PC on January 10, 2012
If you are in the market for a new desktop computer, you know that the number of choices available is staggering. We know how difficult it can be to wade through all of the information, so we have put together a list of the Top 10 best desktop computers. This list should give you a better idea of the type of computer you want, while giving you a broad range of companies to select from. So, without further ado, let’s check out the computers that make the grade.
#10 – Lenovo 3000 J Series: These computers are geared towards families, and they combine the power of AMD 64 processors with the function of a 250MB Hard Drive. Priced at less than $800, these systems clock in as a real crowd pleaser.
#9 – Fujitsu Esprimo C: This is one of the smallest desktops available on the market, and it is also one of the sleekest. These machines can be tailored to your individual needs, and will not disappoint.
#8 – Alienware Area 51 Series: These great looking machines offer unparalleled performance to even the most serious game enthusiasts. The graphics and sound capabilities coupled with the speed of Intel 4 processing make this a must have for those who want a desktop that entertains.
#7 – emachines D5039: Hands down, this desktop is the best value on the market. Emachines is a well repected PC company that has the family in mind, and does a great job of offering amazing products at unbeatable prices. This unit contains everything you need to get started – definitely worth a look (or two!).
#6 – Sony Vaio RB60: This desktop from Sony comes bundled with a lot of cool Sony software, and it also comes equipped with a 17″ LCD display. This is a perfect choice for those wanting a great entertainment PC that also handles work and internet. This product is definitely a solid choice.
#5 – Compaq Presario Series: These computers are very affordable and very reliable. Compaq Presario desktops are the perfect choice for families, and come standard with everything you need to instantly start surfing the web.
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Data Storage Features of Personal Computers
Posted by admin in Personal Computers on January 9, 2012
Computer data storage is the component of the PC which holds digital information for a particular period of time. Data storing is one of the most important functions of a PC. Along with CPU and Input and Output devices, it is considered as core component of a PC.
Formats of stored data
Data is stored in the storage device using binary format. Audio, pictures, text, numerals and any other information are converted into a sequence of bits or binary digits. Binary digits could hold the value of either 0 or 1 only. The set of 8 consecutive bits is called a byte. Byte is the most common unit of storage.
Storage Hierarchy
Based on the bandwidth,latency and cost per bit, the memory types are organized into storage hierarchy. The band width of the memory types at the higher positions of the storage hierarchy is more than of the memory types that at the lower positions. Also, if the position is higher, then the latency is also less. There are 4 type in the hierarchy namely primary, secondary, tertiary and off-line storage.
Primary Storage
CPU could directly access memory type of primary storage. Random Access Memory or RAM is an example of this type of memory. Though RAM is tiny sized and light, but it is quite expensive. It is also volatile. RAM does not retain information, when not powered up. Two more types of primary storage are Processor Register and Processor Cache. CPU contains the processor registers. The size of the register could be 1 byte, 2 bytes, 4 bytes or even 8 bytes. CPU performs various operations on the registers. Among all forms of storage, registers are the fastest to access. Processor Cache is slower than registers but faster than main memory. It is used to improve the performance of the PC. Most widely used information store in the main memory is copied into processor cache. This makes the information access time much lesser.
Secondary Storage
CPU cannot directly access memory type of secondary storage. The CPU uses its input and output channels to access secondary storage data. It is non volatile which means it does not lose data while not powered up. Hard disk drives, optical storage drives,flash memory,floppy drives are some examples of secondary storage category. This is the most important storage for PC because information is stored in it permanently. If by any reason the stored data gets corrupted, the computer support becomes essential to restore the corrupt data.
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Wireless Broadband Defined
Posted by admin in Wireless Broadband on January 8, 2012
Wireless Broadband is also known as mobile broadband. Basically it allows the user to connect to the internet wirelessly. Wireless Broadband is offered by several companies. It may be used in airports, homes, on the road, or anyplace where it can get service.
If you decide you need a Wireless Broadband service you will probably be using it away from your home computer. You will find you are using it on your laptop more than you expect. You can use it as you are waiting for a plane in the airport. You can use it when you are camping. Just pull out that laptop, plug the device in and boot up. There are many places where this comes in handy.
You can use it on the road, after you pull over of course; to check on airline connections or let people know you are going to be late. Of course you could this by cell phone but this way you don’t have to carry on a conversation and waste time if you are in a hurry. And it is much faster to check airline connections via internet rather than calling an ’800′ number and being put on hold. Wireless Broadband is a very cool way to connect to the internet.
There are several different devices or Broadband Cards that connect to the computer. Whichever one you choose, make sure it will fit into the computer. Not all computers have the available slots for some of these devices. Often the older personal computers don’t have any of the slots so you might have to get an ancillary device which may not have the ability to connect without problems. So be aware of the device you purchase. Also make sure it has the capabilities you require. Does it have enough coverage for you? Does it handle all of the applications that you want to use it for?
The first one is becoming obsolete. It is a PC Card. This is a card that plugs into a PC card slot in the computer. It is larger than most of the cards and has the risk of being damaged because it really may stick out. Some of the newer ones have the ability to fold up, making it less of a hazard for destruction. They might not have the ability to work with all applications. They are being phased out and something called an Express Card is available.
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