Although the average consumer has only recently begun to learn the joys of Bluetooth technology, it has been around for quite a while now. The fact that it has been around means that there are quite a few products that are now able to support and utilize this technology and those numbers are growing each year. Currently you can find many Bluetooth supported laptops, cell phones, and PDAs.

The recently learned technology that Bluetooth offers uses small range radio signals in order to replace wires and cables that were once required to transfer information from one device to another. The most hallowed capabilities of this technology is its use friendly lack of complexity, its ability to hold a right connection without constant interruptions, its lower power consumption, and its affordability. Bluetooth was made to operate in areas where ‘noisy’ frequencies often prevent other wireless connections to flourish. Bluetooth uses a quick acknowledgement and ‘frequency hopping’ application in order to maintain a smooth connection.

Bluetooth radio frequencies go at 2.4 GHz, which requires no licensing in order to use. Using this particular frequency allows the avoidance of interruptions from other frequencies and signals. Bluetooth radio also moves much more quickly than other similar systems because it utilizes shorter packets.

History of Bluetooth

Bluetooth can be traced to the King of Denmark from 949 to 981. Harold Bluetooth was well-known for his ability to help people communicate with one another more effectively. The characters on the Bluetooth logo come from characters in the runic alphabet. The reference to this particular king is somehow appropriate as Bluetooth technology also accomplishes the often-hard task of keeping people connected and communicating effectively.

Bluetooth.org defines Bluetooth as a worldwide specification low cost radio solution. This small factor enables the communication of mobile devices with one another.

Bluetooth operates by using 2.4 GHz radio signals that are very similar to those used in many cordless home phones and wireless networking systems. Bluetooth has found a manner in which to limit interference while improving the quality of the transmission because of its heavy reliance on this frequency range. Bluetooth version 1.1 has made leaps and bounds in progress and as a result is not backwards compatible with previous versions.

The maximum rate at which Bluetooth can transfer data is 723 kbps and a range of anywhere from 60 to 120 feet. Bluetooth can be used for a wide variety of applications. Some of the more common current applications include laptops, PDAs, headphones, and printer adapters. Many laptops have Bluetooth adapters built in so that the laptop can easily communicate with other Bluetooth enabled devices. You can also use many USB adaptors in order to communicate with devices that are not graced with a Bluetooth adaptor.

Another fantastic benefit of Bluetooth is the fact that it allows PDAs to easily sync wirelessly as well as to transfer data. Bluetooth is useful in headphones for cell phones in particular to allow hands free, wireless cell phone communication while driving, working, or performing any number of tasks that require the use of your hands.

Many new gadgets are wireless through the technologies that Bluetooth has introduced. A Bluetooth mouse and/or keyboard can be used at a distance of up to 30 feet for those who need to be farther ways from the computer. Bluetooth printer adaptors are particularly useful as they allow multiple users in a network to share printer access without a snake pit of wires to really confuse things.

While Bluetooth is inexpensive to use, the main reason it isn’t more widely used is the initial costs required to implement this technology. The initial costs of installing a Bluetooth system are somewhat prohibitive and most companies aren’t prepared to make this sort of investment in emerging technology.

Christopher Smith
http://www.articlesbase.com/technology-articles/bluetooth-technology-hype-or-a-glimpse-into-the-future-73243.html

With the recent introduction of plug-n-play solar chargers into the market, solar power is within the reach of just about anyone. You no longer have to be a tech savvy “do-it-yourself-er” in order to harness solar power.

What exactly is a plug-n-play solar charger? In its simplicity, it’s usually a solar panel combined with a battery pack, sold as a unit, which is capable of collecting solar energy and storing it in a battery. That’s all there is to it.

The feature that makes this type of set-up so useful is that you can use it to power or recharge your electrical devices, laptops, power tools, radios or even TVs, from the battery pack. The solar power and battery pack are sold together – so you don’t have to worry about compatibility, cables, watts, voltages, or anything like that. And you don’t have to wonder whether the setup will work or not.

By using the battery pack, instead of trying to power your equipment directly from a solar panel, you ensure that you have a steady flow of power or electricity flowing into your equipment. Even on a sunny day there can always be some clouds. When they go in front of the sun it there would be a decrease of solar energy being picked up by the panels, which would momentarily reduce the amount of electricity being produced by your solar charger. But if your equipment is connected to a battery pack (which is in turn connected to a solar panel) the battery would take up the momentary slack in solar energy.

There are other advantages to using plug-n-play solar charger kits, i addition to their steady flows of electricity. Because of the fact that the solar panels charge the battery pack, you will be able to make use of solar energy at any time, night or day, regardless of weather conditions or available sunlight. You simply make sure the solar charger is charging during daylight hours. You then use the battery to charge your laptop, cell-phone, iPod (or whatever else you need to charge) during the night, while you are sleeping.

A small known fact I will throw in is that many people reckon solar chargers and solar panels only work in hot climates. Not right. Solar panels collect solar energy far more efficiently when they are cold. Thus, they really operate more efficiently in colder temperatures. This fact makes them perfectly suitable for just about any climate. All you need is daylight.

There are some factors you will need to take into account with such a solar charger setup:

1. Whether or not the battery pack is capable of powering the device you want to power

2. How long it takes for the solar panel to fully charge your battery pack.

Once you know that, you can choose whether you have found the right solar charger setup for you or not.

There are now a wide variety of ready-to-go, plug-n-play solar charger systems and do-it-yourself packages available, to suit anyone’s needs. They are used for small portable power units,cell phones, camera batteries, iPods, and laptops, etc. They are also used for larger systems which give remote or emergency power for AC and DC appliances such as radios, small TVs, cabin lighting and much, much more.

Plug-n-play devices and do-it-yourself kits are a fantastic way to get started using solar energy at an affordable price. They bypass the need for advanced knowledge in electronics, and keep things simple.

Anna

I was wondering if anyone had a magical chart describing how to price an ancient/used laptop to buy or sell.

I know the factors are the specs of the computer, how ancient it is, and in what condition its in.

What I’d like to see is an actual pricing model based on those factors, so if you magically do, please let me know.

My best advice is this:

Since ancient machines are usually scrapped for replacement parts, the price of a particular one will be determinate by the sum of the Key internal parts:

Mainboard: 65% of the final price
LCD: 35% of the final price

If you need to buy or sell a used laptop, get the model and go to ebay and check those prices. Mainboard + LCD – 20% will be the buy price (with exceptions in models that have some design flaws and are more replacing parts demanding).

Looking for a personal and very fancy Note-pad? Then what you need is Personalized Note Cards. Personalized Note Cards are meant for writing vital information for both business as well as personal purpose. What makes Personalized Note Cards different from Normal Note Cards is that Personalized Note Cards have logos and names while the later doesn’t.

Many Stationary stores make personalized Note Cards, so one should always get the Personalized Note Cards made from reputed places. Excellent stores can make quality wise brilliant Personalized Note Cards. For making Personalized Note Cards one has to pay extra and different shops charge different rates. Thus one should browse around before selecting a store for making Personalized Note Cards.

One can make Personalized Note Cards using different styles, designs, colors etc. For making Personalized Note Cards one needs to needs to choose the type of paper he wants the shop to use for making the Personalized Note Cards. He also needs to select a design from design templates offered by the store for the Personalized Note Cards.

One can use Personalized Note Cards in business for making business or contact cards. One can use Personalized Note Cards for sending letters and thereby keep in touch with friends and family. Students can use Personalized Note Cards for making small notes. Thus we can see how useful Personalized Note Cards are for us.

To find out information about Personalized Note Cards one can read magazines and also use Internet. Designing Personalized Note Cards is not at all hard, so one can even make Personalized Note Cards using Special software. There are even online Personalized Note Cards templates designs, thus one can choose a particular design to be used on the Personalized Note Cards.

Today one can even use Personalized Note Cards on their PC’s or Laptops. They are computer based Personalized Note Cards. People like using Computer Personalized Note Cards as they are simple to store than normal Personalized Note Cards. Personalized Note Cards are available in different themes, thus one can choose Personalized Note Cards as per his choice.

Deepak Bansal
http://www.articlesbase.com/writing-articles/personalized-note-cards-3-125240.html

Protecting a business can be a full-time job – with full-time worries. Just consider the issues you need to be alert to every day:

1. Worms and viruses that can sneak into your computer systems
2. Hackers trying to gain access to your company’s confidential data
3. Employees who might download harmful files from the internet
4. A disaster or accidental deletion that could wipe out critical business records

With so many demands and so many variables, staying on top of security matters can be daunting. Fortunately, there are basic things you can do to reduce security risks. You’ll never get rid of them entirely. But by taking full advantage of the latest technologies, you can be confident you have done everything you can to protect your company.

If you use Windows XP Professional, there is an even simpler way to get updates. Simply activate the Automatic Updates feature, which allows your PC to automatically say you of vital updates once they are made available.

Is the anti-virus software current on all of our machines?
It’s not enough to simply have anti-virus software. Virus writers are prolific, releasing hundreds of viruses each month. That means you need to keep not only your operating system current but also your virus protection software. And make sure it is current on every PC and laptop in your organisation. But, relying on users to stay current with software updates may not be effective in every organisation. Employees may forget or may not reckon it’s vital. That’s one of the benefits of a server-based environment, where updates to PCs and laptops can really be managed from the server.
Does everyone know they should never open e-mail attachments they aren’t expecting or that come from senders they don’t know or trust?
Even with the most current anti-virus software, there’s always a possibility that a destructive worm or virus will get through. That’s why your entire organisation needs to be cautious about e-mail attachments and downloading files from the internet. Consider making these safety tips company policy:
1. Never open suspicious e-mail attachments or those from unknown or untrustworthy senders
2. Configure e-mail to read all messages you receive as plain text to increase security
3. Set the security level on Internet Explorer to the highest level and make exceptions for trusted websites only
4. Use a utility that blocks pop-up ads, which can be used to install malicious code on computers
Do we have a regular back-up procedure, are we following it and do we verify the back-up is accurate?
Backing up the data on your computers is one of the simplest and most effective “safety nets” you can institute. It’s also inexpensive. The thought is to routinely make electronic copies of everything on your computers. The copies should be stored off-site so that in the event of a disaster or accidental deletion, you have a way to restore the bulk of your lost data.
Have we installed a firewall?
If your company uses always-on broadband to connect to the internet, install a firewall as a basic line of defence against outside intruders. There are two basic types: 1) a software firewall such as the Microsoft Internet Connection Firewall that’s included in Windows XP Professional protects the machine it runs on, and 2) a hardware firewall that blocks all traffic between the internet and your entire network except for traffic from senders who are specifically trusted.
Do we have a clear policy on employee internet use and is it monitored and/or enforced?
If you don’t have an internet policy, your company and employees are at risk. And the risks can be serious, from the harmful downloads discussed above to offensive and/or illegal activity that can jeopardise your company’s reputation and make messy legal problems.
Do we use strong passwords and are we diligent about keeping them private?
Be honest about this one: There’s a huge difference between having passwords and using strong passwords. In many workplaces, it is common for employees to share passwords, post them next to their computers or choose passwords that are simple to guess. Worse yet, they use the same passwords for everything and never change them. Make sure everyone knows how to make strong passwords.
Do we have a secure way for remote users to access our network?
Enabling employees to access your network from the road or from home is fantastic for efficiency, but it also exposes your network to risk. For small businesses, Windows Small Business Server 2003 offers a full slate of features designed to make remote access less risky. One is Remote Web Workplace, a remote portal that allows authorised users to access e-mail or their company’s internal websites, from anywhere through a Virtual Private Network or over the internet.

With the Remote Desktop feature in Windows XP Professional, you can remotely control your computer from another office, from home, or while travelling. This allows you to use the data, applications and network resources that are on your office computer, without being in your office. Making sure your company data is safe and secure is a demanding job, no question about it. But at least recent technology can remove some of the worries.

GT Kimberly
http://www.articlesbase.com/software-articles/features-of-microsoft-windows-small-business-server-2003-710653.html