Computer Hardware Components and Accessories

Computers are made of different components or parts, collectively known as PC hardware. Some of the main hardware PC units include CPU, mouse, display screen monitor, hard disk, keyboard, CD drive, etc. You can buy a computer from a branded company or purchase an assembled model through a professional computer software person. Many a times, when some parts of a computer get corrupted, you can also buy separate components from any online or offline computer dealers.

Likewise computer hardware parts also do include novel items such as scanners, sound cards, internet modems and even digital cameras. But, every computer has individual properties like RAM memory, CPU model details, etc which may vary from other computers.

Let us study about some of the most important computer hardware parts:

* CPU - This part is the brain of the computer. It is known as Central Processing Unit and works as a processor. The most popular processors are manufactured by Intel popular as the Pentium Chip model. Intel processors are widely used all over the world by most of the computer manufacturing companies.

* Mouse - This hardware is essential for desktop models as navigational object, to click on varied options, selecting different objects and accessing necessary information on the computer screen. There are two main buttons in the mouse, to be used to access info. Nowadays, you can find interesting types of mouse in the market such as laser mouse or ball mouse. But, they all serve the same purpose to help access computerised info from the CPU.

* Hard Disk - This is a device that helps in storing data. The all-round performance of any computer actually depends on the speed of its hard disk. Higher rotational speed of the hard disk enables fast and high speed performance by that particular computer.

* RAM - It is also known as Random Access Memory, which aids in storing of temporary information in the CPU. When you switch off the computer, such temporary info files are erased. The optimum performance of the computer also depends on the size of its RAM.

* Keyboard - This is one of the most important part in computer hardware. Keyboard helps users to enter specific commands by punching of alphabets, numbers or signs. There are other function keys like Control, Alter, delete, F keys, Page up, Page down, etc in the keyboard. There are a total of 101 keys in any standard keyboard, and designed in such a way so as to make typing faster and easier.

Other additional computer hardware includes scanner, joystick, external drive, printer and servers. Buying individual computer hardware parts can be a tedious task as there are variety of selection models, styles and designs to choose from. It is best to gather some basic first hand info about the specific computer hardware part that you intend to buy.

You can choose to buy from online computer hardware retail shops and other hardware dealers. Online directories can help you sort a list of potential manufacturers or retailers who are genuine and trustworthy.

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Wireless Lan And Laptop Computers

A small business run from home or on rented space, while it can be extremely profitable, cannot be furnished in the same style as a large-scale company office. Using standard full-size desktop computers in such a set up is impracticable, as it takes up too much space and is too bulky for cramped confines. To deal with such a situation, desknotes or transportables may just hold the key.

Desknotes are systems that can be alternately used as a standard desktop PC, but also offers portability into the bargain. Desknotes have the same power levels as a desktop PC and occupy much less room. Moreover, to keep expenses to a minimum, it is possible to install a LAN amongst the desknotes, where only one laptop need be connected to the Internet and access is shared to all the laptops connected to the network. This is also true for the devices connected to the central laptop; through LAN, all the laptops can use the same device. Thus, for small offices with three or more laptops, LAN (Local Area Network) is surely a boon.

LANs usually span a building or a small group of buildings. Connecting one LAN with many others through telephone lines and radio waves is called WAN (Wide Area Network). A Local Area Network that uses

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Thermal paper is ultimately cheaper.

Thermal paper is cleaner than your standard ink, produces a crisper resolution, and is ultimately cheaper. Though thermal paper used to be considerably more expensive, the price has come down in recent years, thanks in part to better technology that allows its manufacturers to produce it at a more reasonable cost. Moreover, a thermal paper roll is quieter than bond paper, which is an added bonus for any shopper at the end of a long day.

Appleton uses ideas that make a difference to create product solutions through its development and use of coating formulations and applications, encapsulation technology, and specialized and secure print services. The Company produces carbonless, thermal, security, and performance packaging products. Appleton is headquartered in Appleton, Wisconsin, and has manufacturing operations in Wisconsin, Massachusetts, Ohio, Pennsylvania and the United Kingdom, employs approximately 3,400 people, and is 100 percent employee owned.

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Securing Your Wireless Computer

Wireless Internet connections aren't just convenient for you-they also may be convenient for hackers. Fortunately, it isn't difficult to protect yourself.

Wireless systems can be particularly vulnerable to digital intruders, possibly putting sensitive or private data at risk. However, you can protect yourself by using WEP or WPA encryption, which require users to enter a password before they are allowed to access your wireless network.

These encryption methods are described in easy-to-understand language in a new book called "Geeks On Call Wireless Networking: 5-Minute Fixes" (Wiley, $14.95). The book also offers expert advice and step-by-step explanations of topics ranging from configuring a wireless router to troubleshooting a slow connection.

Here are some additional tips from the book that can help you protect your wireless network.

1 Reduce the range of your network. Doing so can keep nosy neighbors from intruding on your connection. Move your wireless router into the center of your home and decrease its power settings.

2 Pick a new password. Most routers have a default password of "admin." Be sure to change it.

3 Disable SSID broadcasting. Most wireless routers broadcast the names of user networks (SSIDs) so that other users can log on. This could be a security risk.

4 Use encryption to protect credit card information you send wirelessly over the Web. Also, only use your card on a Web site that has SSL encryption (look for a padlock in the corner of the site).

• Disable your wireless card when not in use. There's no better way to secure your computer.

5; Use a firewall, which is a program that shields your computer from Internet criminals.

6 Don't use shared files. Remove all important documents from your Shared Files folder before accessing a public network.

7 If you use a wireless laptop, disable the feature that attempts to connect your laptop to any available wireless network. For most Windows-based laptops, double-click the wireless icon in the lower right corner of Windows. Then click "Properties." Click the "Wireless Network" tab. Next, click the "Advanced" button. Uncheck the "Automatically Connect to Non-Preferred Networks" option. Finally, click "Close."

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Building A Computer Introduction

If you are reading this article, you are probably wondernig, why and how do you build a computer. Building your own computer is more simple than you think and has many benefits.

Why Build A Computer?
Building a computer has many benefits over buying a premade. First of all, it is generally cheaper if you build your own than buying one. If you shop your components, your DIY(Do it yourself) computer will be cheaper than its premade equivalent. If you build your own computer, it will be faster than one that is premade, because most computer manufacturers use cheap components and try to cut corners to cut down costs. Additionally, your self built computer has more room to upgrade if you so decide to in the future. Prebuilt computers usually only have enough expansion slots for the components that are going to be in the computer. Because of this, your prebuilt computer will become obsolete sooner. Also, building a computer is a satisfying experience and you will learn more about how your computer works.

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Blu-Ray set to take the world by storm!

The Blu-ray Disc belongs to a new generation of optical discs capable of staging high density data. Blu-Ray technology is based on a blue-violet coloured laser. The blue laser operates at a wave length of 405 nm, while older technology such as DVDs and CDs are based on red and infrared lasers that works at 650 and 780 nm. Since the wave length is shorter with a blue laser, the new Blu-ray technology makes is possible to store much more information

The advantage with the Blu-ray technology is that the laser beam can be focused much more tightly at the surface of the disc. Tight focus means that a smaller spot will be produced on the surface on the disc, and when the spots become smaller there will naturally be room for more information on each disc. The minimum spot size of any laser depends on a naturally accruing phenomenon called diffraction. The narrow beam of light sent out from a laser will always diverge into a wider beam eventually, due to the natural diffraction of

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How to Buy a Laptop Computer

There is a wide range of laptop models available on the market today and buying the right machine can turn into a confusing mission.

There are laptop computers intended for home users, multimedia, business and gaming. You can spend from $500 to $5,000.

The very first step you need to do is to determine your needs.

If you spend a lot of time traveling, your best option is a light laptop with a long battery life.

If you are an average home user, you can easily select a low-range laptop that will cost you about $500.

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Cartridges

“Cartridge” refers to a detachable sub-unit that is held within its own container.  They were popularized by early home computers like Commodore 64 and early TV games systems. The advantage of cartridges lies in the fact that they facilitate quick loading of software from one media format to another. It also helps maintain the software in a sturdy and damage-resistant form.

Throughout the 80s and the 90s, all home video game systems were cartridge-based. As technological advancements in the late 90s ushered in CD technology as a cheaper alternative for data storage, hardware companies shifted from cartridges to CD-based game systems. This was on account of the lower costs and larger storage space provided by a CD-ROM. 

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Are Inkjet Printers the right choice?

Inkjet Printers are not only getting better but they also becoming less expensive with time. A branded inkjet cartridge can cost you $30 or more and if your printer uses a multi-color ink cartridge system ink costs could easily $1000 to replace all inkjet cartridges for your entire inkjet printer.

The growing business of inkjet printers has brought about additional benefits to them. Manufacturers have built their business around the supplies rather than the printer itself. They have made the inkjet printers an inexpensive commodity sometimes selling them at lower cost or may be even less thereby making long term profits from inkjet printers.

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Device Drivers

Not many people know about device drivers until they need to find one, be it for a printer or most commonly a modem driver. Finding one can be very difficult to say the least if you are using HSP based modem drivers.

What is a Device Driver?

Every device, be it be a printer, modem, or keyboard, must have a driver program. Many device drivers, such as the keyboard driver, come with the operating system. For other devices, you may need to load a new driver when you connect the device to your computer. Note that in the older DOS systems, drivers are files with a.SYS extension. now in Windows environments, drivers often have a.DRV extension.

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Be Picky About Computer Keyboards

If there is anything I have learned in the past ten years of being an editor that is using my computer all day, it is that it is good and right to be absolutely picky when it comes to choosing computer keyboards. If this seems like an insignificant choice to you, then it is clear that you, unlike me, do not spend the majority of your days typing on a computer.

If you did, you would quickly realize what a difference computer keyboards can make to a typing experience. It took me a couple of years to realize that there were actuallly a lot of options when it comes to computer keyboards and that I didn't have to be satisfied with a computer keyboard that didn't fit my hands.

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Inside View On Printers

Printers have certainly come a long way since the inception of the character and and dot matrix printers.

These ancient products (ancient in technical terms being as few as 10-15 years) were what are known as impact printers, simply because they needed to make a physical connection with the paper in order to achieve the ink-on-paper result.

Dot matrix printers came equipped with a group of pins that touched a ribbon which then connected with paper to produce the finished product. Character printers, which worked on the same principle as electric typewriters, used a bar or ball whose surface was embossed with all the characters you now see on any keyboard. These characters made contact with the ribbon, which in turn made contact with the paper.

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Find The Best Computer Hardware

In our age, owning a personal computer is something that most people have the luxury of. In fact, I know several people who have multiple computers in their home and at their office. As the popularity of computers and the internet have grown in the past decade, so has the need of the people in having a computer to call their own. Sure, they can go to a local computer shop and purchase a desktop or a laptop computer, but more and more people are opting to put together a computer from separate pieces of hardware.

Computer hardware is basically all of the parts of your computer. Your screen, your keyboard, your tower, your disc drives. All of the parts that make up your computer are considered its hardware. Hardware is not to be confused with the software of a computer which is its programs and the things you can do on a computer.

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How to Sell Used Computers

Many people sell their used computers for a variety of reasons.  Some sell their used computer instead of throwing them as a trash get some money from them, while others sell their used computers to buy new computers with the latest features and technology.    Not only individuals sell their used computers, but also large numbers of organizations or firms sell their used computers.  They do so because the computer systems may require maintenance and repairs, after some time due to the decrease in performance seen in the computers after some years.   Instead of spending more money on the maintenance and repairs they sell and gain money, as there is a great demand for used computers.  Such companies easily sell their used computers online through auctions or exchange for new computers with less effort in no time.

Used computers are bought by either students who do not have good savings or earnings or they are bought by educational institutions like the schools and universities. Some parents buy used computers for their

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How to buy the perfect PC

PCs have become a staple in every home. Without PCs, you will find it hard to stay connected and to even do the work required of you in school or in the office. With so much PC packages being shoved to our throat every time we go to department stores and computer shops, you’ll really get quite confused on what you really need and what PC package will fit your budget and lifestyle. To help you through this dilemma, here is a brief backgrounder of the parts of PCs that you should get to know.

Processor.

This is one of the three primary components of your PC. The processor is the part that determines how fast your computer process information. Intel is still the leading brand in processors but competitors such as American Micro Devices (AMD) are slowly catching up, offering cheaper alternative. In shopping for a processor, one should consider the following:

Clock speed – this will show the number of instructions that a computer can execute in a second. This usually comes after the brand name. Processors nowadays are already set at the gigahertz range.

Cache memory – this stores the data that were previously accessed. This simplifies the work of the computer as it would not take twice as long to access information already stored in memory bank. Without a cache memory, much of the work will fall on the RAM (Random Access Memory).

Operating temperature – some processors easily heats up. Before buying, make sure that you have asked about the operating temperature just in case you need to buy additional fans or put the computer in an air-conditioned room.

RAM (Random Access Memory).

RAM serves as the temporary memory of the PC, containing information that are needed for the computer and the programs to function. In addition to processors, RAM also determines the speed of the computer. The higher the RAM, the faster the computer is in accessing information and responding to commands.

Motherboard

This is where all the parts of the PC’s CPU (Central Processing Unit) are attached. Some motherboards already have videocards and soundcards embedded on it while others don’t. what is important however is to choose a motherboard that is compatible with your RAM and processor. Incompatibility of PC hardware can cause major problems and may even lead to the breakdown of your computer.

Hard drive.

This is the part where you store all the information in your PC. Picture a floppy disk with much much larger storing capacity. The hard drive serves as the permanent memory of your computer. Here you install all your programs and save all the documents that you need. It is also important that you buy a hard drive with really big capacity especially now when people are so used to storing multimedia files that may use up a lot of hard drive space.

Video cards

This is the part of the computer which determines the quality of the multimedia images that you will view. The higher the memory of the video card, the better is the picture quality and the colors. Also, video cards are also responsible for how fast multimedia images are accessed. This is especially needed if you use your computer for multimedia activities such as watching a movie or playing video games.

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Are Inkjet Printers the right choice?

Inkjet Printers are not only getting better but they also becoming less expensive with time. A branded inkjet cartridge can cost you $30 or more and if your printer uses a multi-color ink cartridge system ink costs could easily $1000 to replace all inkjet cartridges for your entire inkjet printer.

The growing business of inkjet printers has brought about additional benefits to them. Manufacturers have built their business around the supplies rather than the printer itself. They have made the inkjet printers an inexpensive commodity sometimes selling them at lower cost or may be even less thereby making long term profits from inkjet printers.

An Inkjet printer uses a unique printer mechanism, which provides quality printing. They transfer tiny droplets of ink directly to the page. This is the reason why you will find most photo printers are inkjets. If you want to

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