Scad Programme

Archive for February, 2011

Bluetooth Wireless Networking

Bluetooth technology offers three distant types of primary ranges, based on crop ranges. Class 1 devices are the most controlling, seeing they importance own up to 100 mW of aptitude, reserve a regular antenna giving them a compass of around 130 – 330 feet.

The class 2 devices are lower dynamism, offering up to 2. 5 mW of skill. A regular antenna will gift them a scale of around 50 – 100 feet. Class 3 devices usability polished less qualification, up to 1 mW of competency to betoken exact. Stash a regular antenna, they will obtain a scope of around 16 – 33 feet.
Rolled though you may not catch on existing, Bluetooth wireless technology has never been intended for person other than short distance types of communication. Shroud Bluetooth wireless, the short area is all a gain.

For one, the short reach will cut the quarters of monkey wrench between your devices and those that belong to others who are nearby. Overall, this is a basic type of security, designed to protect you and your devices.
Secondly, the lower competency used for short compass means a longer battery oomph. Most Bluetooth devices will arouse their gift from a battery, suggestion that element you amenability halt to never cease the battery enthusiasm is very same material.

The wireless networking offered by Bluetooth is in truth among the highest, identical though palpable uses short scale communication. Bluetooth is used shadow wireless controllers, the internet, and even wireless headsets.
For the best in short range technology, Bluetooth is extremely hard to beat. If you ‘ ve never tried Bluetooth before, now is the time. It ‘ s the best with wireless networking, especially for those who enjoy hands free talking on their cell phone.

Other wireless technology such as Garmin GPS utilizes complex wireless systems that let you know where you are, on any place in the world.

Cell phones have become ubiquitous. It is now unusual to find anyone who does not have one of the little beasties. The obvious next step was to seek a means to ensure your cell phone is unique and different from all of the others out there. A variety of features exist in varying combinations and there are the usual tricks like customizing the picture on the screen or the ringtone. These are almost all more style than substance.

We’ve all experienced the ringtone that outstays its welcome and then just won’t go away or a ringtone that is just particularly inopportune for some reason. There are also stories of just the wrong cell phone wallpaper showing the bosses relative or some other potentially embarrassing sight. Some people actually use those phones for something other than status symbols. Here are a couple of tricks for those.

One potentially useful trick is the doggie whistle. For cell phones that allow multiple ring tones, using the inaudible dog whistle for one provides a handy method to discourage annoying dogs that might chase you as you jog, harass you as you walk or some other hassle.

Another useful trick is that of habitually locking the phone’s keys when you replace it into a pocket, purse or other container. The random presses of buttons that otherwise occur are a drain on battery power unless the phone has been told to ignore them with the lock command, and can potentially save money if the phone might accidentally hit the correct combination to make a call. Another useful feature to save battery power is airplane mode, for those times when you do not desire to answer the phone but do expect to need the phone’s other features, such as a planner function or even clock.

Finally, cell phones are terribly convenient. Carrying around a phone book isn’t. Yet conventional directory assistance costs can add up. The alternative is 800-FREE411, or 800-373-3411. This is an ad supported directory assistance that can be used to find numbers you haven’t stored on your phone without running up those directory assistance charges.

Router is a computer device that receives or forwards data packets to and from the Internet towards a destination in the process called routing. Router is the essential component of the computer networking that enables any sent data to arrive at the right destination.

As an illustration, imagine that the Internet is the world and one computer is one household. Other computers connected through the Internet are households around the world. Say one household will send a letter to another household in any part of the world. The letter has an address right? And that address would determine the destination of the letter. But without one reading the address, the letter would not arrive to the right receiver. The letter also would not be able to reach the intended receiver if there is not medium. This medium would be the courier. And the courier of the computer data is the router.

A router (broadband router) is also a device that enables two or more computer to receive data packets from the Internet under one IP address at the same time.

Remember that to be able to connect to the Internet, a computer must have an IP address unique from the rest of the computers. Therefore, every computer connected to the Internet has it own IP address. It is like having a fingerprint or ID as an access pass to be able to enter the web. With the presence of the router, this “fingerprint” or “ID” could be shared by two or more computer at the same time.

In simplest form, a router makes two or more computer use the Internet at the same with one access pass.

One more thing: a computer with cable modem could also be considered as a router. In this, the computer would do the process of routing like normal routers do. Other computers are then connected to the computer with Internet connection that would give it with the Internet connection. The computer with cable modem has the direct contact with the Internet and the ones connected to it are sharing the connection.

Why would anyone need a router?

For households with two or more computers who would want to have Internet connection to every computers they have, taking subscription for each would be too much. The solution is to buy a router that would enable every computer in the house to have an Internet connection. In the definition above, the broadband router would act as a hub to the existing Internet connection.

If the router is comparable to a hub, would it affect the Internet speed?

It should be taken into consideration that once a single Internet connection is divided, the connection speed is affected. But there are some broadband routers that would bring minimal slowdown to the Internet speed and the effect might not even be big.

Internet speed would also depend on the type of application used in a router. While some would inflict little effect on the speed like online games, others would terribly slowdown your connection and even hinder you to use the Internet at all.

Usually, offices use a more sophisticated router to redirect Internet connections to the large number of computers. These routers would give better data packeting compared to a typical router used at home that results to faster Internet speed.