GPS System consists of Antenna, LNA, SAW filter, GPS RF Front-End and GPS Module which includes Fox Crystal Oscillators, Fox RTC crystal having frequency 32.768 KHz, and an LDO (low drop out) regulator.

Antenna: – It transfers the transmitter energy to signals in space with the required distribution and efficiency. It also measures the direction accurately.

Low Noise Amplifier (LNA):- It is a special type of electronic amplifier which amplify the weak signal received by the Antenna and to reduce the noise into the received signal also. It is often placed very close to antenna to minimize the losses occurs in the coaxial cable feed line because it is very loss at microwave frequencies.

Surface Acoustic Wave Filter (SAW):- SAW filters received the amplified signal from Low Noise Amplifier and fed to the GPS RF Front-End. It is electromechanical devices in which electrical signals are converted to a mechanical wave in a device constructed of a piezoelectric crystal or ceramic.

GPS RF Front-End:- RF front end is a generic term which is found in a receiver that sits between the antenna and the intermediate frequency (IF) stage.

GPS Module: – It includes Fox Crystal Oscillators, RTC crystal having frequency 32.768 KHz and an LDO (Low drop out) regulator.

Few series of FOX are used as a TCXO in GPS application such as FOX923GP, FOX914 and FOX312BE series because of clipped sine output, 0.5 PPM stability, and 1.8 to 3.3 operating voltages.

FOX series are used as a RTC crystal in GPS application such as FX255, FX145 and FX135 series because of long term stability and frequency of 32.768 KHz.

The Fox products which are used in GPS application are RoHS-Compliant product.

A vehicle tracking system is an electronic device installed in a vehicle to enable the owner or a third party to track the vehicle’s location. Most modern vehicle tracking systems use Global Positioning System or GPS. The Global Positioning System is a global navigation satellite system developed by the United States Department of Defense and managed by the United States Air Force 50th Space Wing. Many systems also combine a communications component such as cellular or satellite transmitters to communicate the vehicle’s location to a remote user.

How GPS Vehicle Tracking works

GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the vehicle’s exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is? Now, with distance measurements from a few more satellites, the receiver can determine the vehicle’s position and display it on the unit’s electronic map. There are saveral reasons for why service companies purchase a GPS Vehicle Tracking Fleet Management System.

* Aide and assist in dispatch to calls.
* Have an accurate method of billing for calls.
* Better customer service, “where is the tech”.
* Eliminate time theft / virtual time card.
* Eliminate side jobs and after hour use.
* Lower insurance cost.
* Make more service calls per day.
* Eliminate disputes between customers and mobile workers.
* Keep track of vehicle maintenance.
* More efficient business / lower costs – raise revenue.

Your Computer System

Your computer is a set of tools and you need all those tools to function effectively. It contains two major set of tools: software and hardware. Learning the hardware components of your computer system is important specially when getting started. Let’s find out what they are.

Input Devices

An input device captures information and translates it into a form that can be processed and used by other parts of your computer. Input devices include a mouse, keyboard, trackball, touchpad, scanner, digital camera, digital video camera, and many others. These devices essentially help you enter information into your computer system so you can use and manipulate it. Desktop Computers always come with a mouse. On notebook computers, you’ll also find another input device called a touchpad. A touchpad is a touch sensitive input device on which you move or slide your finger to cause your screen pointer to move accordingly. These are now the most common pointing input devices on notebook computers.

As you use your computer system, you’re certainly not limited to capturing information that exists in a text or numeric form. You can also capture audio – using microphone, images, and video. A digital camera is an input device that helps you capture live photos and pictures and transfer them directly to your computer. A digital video camera is an input device that helps you capture live video and transfer them directly to your computer. With these two devices, you can easily capture photos and video and add them to your Web page.

Output Devices

An output device takes information within your computer and presents it to you in a form that you can understand. The most common output devices are monitors, printers, and speakers. As you might well guess, speakers are output devices that allow you to hear information.

Many of today’s computer applications are multimedia-based. A multimedia is a presentation of information that can include sound, text, graphics, video, and animation and over which you have some sort of control. Monitors on the other hand, are output devices that display information to you on a screen. When you buy a monitor, you need to consider screen size, resolution, and dot pitch. Screen size defines the viewable area of the screen and is measured from one corner to the opposite corner. Most people prefer bigger screen sizes, but bigger screens also cost more money.

A printer is an output device that creates a hard copy or paper version of the information you want to see. Today’s personal computer printers include inkjet and laser printers. You still might find some dot matrix printers in use, but they are quickly fading away. For both inkjets and lasers, the resolution of printer is the number of dots per inch (dpi) it produces, which is the same principle as the resolution in monitors. The more dots, the better the image, and, usually the more costly the printer.

In general, if you need color, you should probably buy an inkjet printer as opposed to a color laser printer. Color inkjet printers sell for as little as $100. However, if you want extremely high quality black-and-white paper prints, you should probably consider buying a laser printer.

Being a computer technician pays nice money and has for a very long time. Why?well, mainly becuase alot of new computer owners fail to learn how to use and maintain there new computer. Before purchasing my first computer back in 1998, I took an 8 hour class on the basics of operating a windows 95 system based computer. Even with the class, within the first few months, I had crashed the computer 3 times. This gives you somewhat of an idea about what we have here today. Alot of people now are getting computers becuase there friends have one, or to just get into the chat rooms, or the adult sites. point being. they dont know how to use a computer, much less maintain one.

To save yourself alot of money and unneedless trips to the computer shop for repairs, there are a series of very simple steps you can take to keep your new computer running fast and efficient. Myself, I have windows xp home edition running on my computer. I find it to be the best system out there at the moment. The choice is of course yours as to what operating system you install on your machine. When you get your new computer home and you configure an internet connection, the first thing I recommend that you do is to get to the windows update site. The site will automatically update your new operating system with files to prevent people on other computers from accessing your data. Next step is to install an anti-virus and spyware program on your computer.

If your buying a new computer from a big outlet, this is usually included with your purchase but not always. Make sure to inquire about this when purchasing your computer. Both these programs, the anti-virus and the anti-spyware are a must have in todays computer age. You can get good information from google. Just type in anti-virus in the search box. you will get choices for alot of programs. same for the anti-spyware.

Over time, you will visit alot of websites. Most of these sites has what are called “cookies.” These are little embedded packages of data(files), that the sites you have visited leave on your computer to track your browsing habits. After awhile, these files need to be purged, deleted from your computer.

Other files that need to be purged at least once a week, are your temporary internet files and your history files. Failing to do this will really slow down your computer to a crawl and possibly cause a system crash, meaning you will have to re-install your operating system.

When you open up internet explorer, at the top left of the page, you will see options. Look for the Tools option. Left click “Tools”, then left click “Internet Options.” From there it should be straight foward for you. After you have deleted your temporary internet files and history files, click “OK” I do this at least once a day, really keeps my computer running fast.

Within all windows operating systems, there is a system tool that you should use once a month to keep your computer running smoothly. During normal usage, the files on your computer become fragmented. Meaning, bits of files are scattered to different parts of your hard drive making it more difficult and time consuming for your computer to locate. If you click start, accessories, system tools, you will find disk defragmentor. Run the program. You will find if you have not done this in a long time, will make a big difference in the overall performance of your computer.

Now im going to share with you, some things you can do about whats inside of your computer “the case” or your computers “hardware.” No matter how clean the surroundings where you have your computer placed, over time, alot of dust and particles gather on the inside. your motherboard, inside the power supply, on your cpu, all your cards “video, sound, etc.” I clean the inside of my computer every 3 months and I recommend all new users do it also.

Here is how to do it: First, before you do anything, make sure the computer is unplugged from the outlet and is completely turned off! Next is to get a screwdriver for those little round screws you will need to undo to get inside your case. When both sides of the case are removed, you will need a can of compressed air. you can buy this from any computer store for under 5 dollars. You then spray all the areas inside the case. you will see the dust and dirt flyng off from the places you sprayed. Doing this 4 times a year(every 3 months)Is a great way to save alot of money and keep your computer running like its brand new.

Home theater systems are now common in many households. People are ready to spend money for entertainment purposes and invest in expensive home theatre systems. Even though you have an expensive device, you can’t have the real theatre experience without effective home theatre screens.

There are people who think that it is waste of money to invest in home theatre screens. A home theatre system with digital devices and speakers is not necessarily a cheap setup. After buying the system, many people buy white fabric to use as projector screen. You can view pictures on simple white fabric, but to have the real experience, you need projector screens.

These projector screens are highly sophisticated and you can view each and every color in the movie with the use of a good projector screen. If you are ready to spend for the home theatre system, you must be ready to install the screen as well.

Home theater screens must be chosen depending on your room size and usage. Fixed screens are mounted on walls and installed during the setup of your home theatre system. You can hide ugly wires and give a classical appearance to your home theatre with the use of these wall mounted screens. If you feel that you won’t have enough space in your room to mount the screen, you can buy retractable projector screen.

This screen can be retracted back when you don’t use it. Tripod screens are basically useful when you are on travel. This type of screen is smaller so that it can be carried to any place. If you intend to buy projector screens to watch movies at home, you don’t have to buy tripod screens.

Several companies sell home theatre screens at various sizes and prices. It is up to you to decide what type of screen you want. The modern day digital screens are highly precise that you can watch every color and every pixel clearly on the screen. You will see sharp images and high color quality with these digital screens. Once you watch a movie using projector screen, you will realize how stupid it is to use some white fabric as the screen.

You don’t have to choose the first screen that you come across. On the internet, you will find a number of websites selling projector screens for your home theater system. If you wish to save money and get the best value for the amount you pay, you should do comparison shopping. While comparing different products, you have to compare based on various factors such as price, quality, company, features and so on.

Before you start your shopping for screens for home theater projector, you must identify the size of the screen you need. This decision must be made considering your room space and distance of the projector from the screen. Without this knowledge, you will end up with something that is either too big or too small for your home theater screen room.

SUNNO is the most active and innovative manufacturer in china to bring many fantastic and featured smartphone. Following the previous SUNNO series, they unveil its latest innovation known as the SUUNO S880, created physically excellent and stylish, A dead-ringer for the Sony Ericsson Idou，destined for high-end business-friendly smart life. This china novelty integrates many highlights supposedly powered by an 806MHz Processor, Sporting a 3.6 inch WVGA HD display, featured with CMMB handheld TV, an 8 Megapixel camera, reportedly packed by dual boot capability. CNDIGIT’s reliable source claims that such dual-boot based communicator will be officially launched after 2010 spring festival. The finished product available actually boasts of Marvel 624 MHZ based on WM OS, and 5.0 megapixel. Come without CMMB, a bit disappointed though, but still mighty intriguing to enjoy such versatility and software selection running on full-fledged WinMO OS.

Spec-wize, eye-popping styling, well-done customizations, Are you in a position to pick up one? CNDIGIT will guide you to know more about this new widely beloved device.

The Best Smartphone Gift for 2009 in Your Hand

With the New Year coming, the SUUNO S880 definitely stands out from other similar products to be a hit of 2009, whatever its hardware or software it surpassed a lot of the cloned phones. So much attention are devotedly paid till its finishing stage today, hopefully it will live up to our expectation. The Dual OS Version, you can bet, will be big concern of 2010, so stay tuned to get the latest updates. CNDIGIT will keep you informed.

Screen and Design

At fist sight, it resemble much Sony Ericsson Idou, slim, elegant and simple

Sporting a 3.6 inch WVGA HD display with 480×800 resolution, the super capacious touch screen enable you more operation space and wonderful visual effect 16:9 wide standard.

Camera and Entertainment

Another snapshot, Word comes that it employs a real 5.0 MP Mega pixel, offering very clear and quality image, the special and spacious HD touch screen we have presented contributes evidenced by CNDIGIT’s showcase. Previewed pictures can randomly vary into small or large. By the same token, the video output also favors its entertainment function.

Operating System and Software

Capable of handling Windows Mobile, thanks to its powerful Marvell 310 running to 624 MHZ processor accompanied 128MB/256MB RAM Internal Memory capability, it assures the operation and surfing speed. Build-in many PPC APPS, more Carefree for business handling and fun-seeking.

Navigation and Connectivity

Apart from those features above, usual amenities like WIFI and GPS is a must for this high-end Smartphone. You will navigate faster with this GPS feature and also you will stay connected through its amazing WI-FI functionality.

Networking and Language

Cover with GSM 850/900/1800/1900 MHZ, quadband with 18 multi-language supports, wherever you are, you can enjoy this smart gadgets working with all carriers in the world.

Remark

Sunno series all support up to 18 languages. (English, French, German, Greek, Finnish, Italian, Swedish, Spanish, Dutch, Norwegian, Danish, Czech, Polish, Portuguese, Russian, Korean, Japanese, Chinese)

Vehicle Tracking System is a huge system because it can consist of 24 satellites of a space for tracking any vehicle, So if you can interesting to know more about GPS Vehicle Tracking system and how it’s work then read on……

Vehicle Tracking System is used various products for tracking the vehicle. GPS Tracking for vehicles is used by many organizations such as car dealers, rental agencies, Courier companies and Taxi service companies etc. where they can view their vehicle on interactive map of their Real Time Movement. The map allows zooming in for a closer look. On this map vehicle can be represented as dots and it can indicates.

* Red dots represent that Vehicle that are parked.
* Green dots represent that Vehicle that moving.
* Yellow dots represent that Vehicle that are idling.

Working of an Vehicle Tracking System:

It can be done by online in which you can log in to the Vehicle Tracking System’s website then you can select a vehicle and click on ‘locate’ button. The Tracking system passes a request to GPS devices which is build into the vehicle which give response back with the position of the vehicle in terms of longitude and latitude. Vehicle Tracking System can also find out

# Speed of a vehicle in miles/hour.
# Indicating about the direction of vehicle in which its movement.

Now that you know how vehicle tracking devices work, I’m sure that you would like to install a GPS Vehicle Tracking System in your vehicle.

The Hawkeye AVLS comprises of:

• A Hardware unit which is mounted in the vehicle,
• A Control Station run by the service provider
• A Server on the Internet which displays the position of the vehicle

The Hawkeye hardware unit in the Vehicle computes an exact latitude and longitude position when it receives data from at least 3 GPS satellites.

This position and certain other data such as heading (direction), speed and time are encoded, compressed and sent by SMS to the Control station.

• The time interval between SMS messages can be set or changed from the Control Station or the end user’s screen.
• It is possible to have SMS set to an ‘On Demand’ mode. This is useful in scenarios where continuous monitoring is not required. Whenever it is necessary to track the vehicle, a command is sent out from the Control station / end user and the current location of the vehicle is plotted on the screen. This reduces the cost of SMS drastically.
• Data is sent in an encrypted format, so it cannot be decoded by anybody except the intended receiver.
• Data is sent in a compressed form. This allows us to send data for at least 20 positions in one SMS. Hence, if the frequency of SMS messages is set at 1 hour, when one SMS message is received by the Control Station, it updates the last 20 positions the vehicle has traveled, on the map (one position every 3 minutes).
• Besides time, speed, position and heading, other parameters can also be monitored and the data sent in the SMS eg temperature in Reefer vans etc.

The Control station sends the decoded data from the Vehicle to the Web server. The Web server displays the position of the vehicle together with any other data specified, on the map. The data is also stored in a database, so that it can be played back and a record kept for future use.

When a client logs into the web server, he is identified through his user name and password.

• The client is then presented with a list of vehicles he is permitted to view.
• The client can select the vehicles he would like to track.
• Vehicles can be identified by giving them different colour icons.
• There is an option to view the history/track of the previous positions on the current route, e.g. one can choose to view the last 5 positions, 100 positions (any number) etc. for a particular vehicle. The map will then display the current location of the vehicle (which will be constantly updated) together with specified number of previous positions selected.
• The map has various ‘zoom’ levels which allows one to view a smaller area of the map in greater detail. On zooming into areas of the map, landmarks and
• There is an option to turn the ‘Pan’ feature On and Off. When the ‘Pan’ feature is On, the map is updated to keep the vehicle in view. When the Pan feature is Off, the user can view other parts of the map, regardless of whether the vehicle being tracked is on the screen or not. The user may choose to turn the Pan feature Off to view the previous route history, or to view another vehicle.

Enjoyable entertainment is indispensable in this fast paced world with hectic schedules. Listening to music and watching movies with life-like sound, are two of the best entertainment options available today. Compared to the other entertainment options such as high end PC gaming, entertainment through music and movies is very inexpensive. Listening to music and watching movies with high quality sound has changed in the past decade. The speakers of long ago with mono sound only, have changed into stereo and surround sound with 6+ sound channels. This advanced speaker system is popularly known as the home theater system. Home theater systems can bring your room to life with extraordinary, realistic sound effects.

Buying Home Theater Systems

There are varieties of home theater systems available in the market. However, choosing a home theater system is very easy. The first factor to be considered while choosing the home theater system is the room size. You should make sure that the home theater system of your choice can be conveniently placed in your room. Many people make a common mistake of buying bulky home theater systems and then struggle with the insufficient space. So be sure about your room size before you head out to buy a home theater system or order one online. Sound quality is obviously another factor to be noted. Always remember the fact that great sound quality doesn’t need to come with great looks. So don’t choose a home theater speaker system based on appearance only as it may disappoint you with the sound quality. Always test the home theater system before you buy them, or search online for reviews if you are buying from a web commerce store. When it comes to budget, you can save a great deal of money by buying cheap home audio speaker systems online. There are a few home theater system suppliers online who provide up to 50% discounts.

Installing Home Theater Systems

Buying a speaker setup is no big deal these days with many affordable options and easy access to online merchants. However, installing them properly is a challenging task. Improper placement will destroy the sound quality. You should be well aware of the acoustics of your room where you are planning to install the home theater system. If you are not sure about this, you have to get the assistance of an experienced installer or be prepared to spend a few hours researching online. Getting help is often worth the money you spend because, the proper placement based on the acoustics of your room is very much essential to enjoy the best sound.

Bottom Line

You can buy home theater systems in the comfort of your home today. You don’t have to roam all around, hauling huge audio systems all the way back to your living room. All you have to do is to find a genuine online supplier of quality, cheap audio systems and place the order. The audio system will reach your doorsteps after a few days. If you are not sure about making a choice, you can make use of the audio system reviews available online.

When it comes to entertainment, audio systems are one of the most important choices to make. With many advancements in sound engineering, lots of classy audio systems are available in the market to choose from. With lots of choices for audio systems, it can be confusing to choose the one for your entertainment needs. In the past, when you planned to buy a home audio system, you went straight to an electronics store, and chose the speakers based on their appearance, sound quality, and price. This process is simple and once you bought the speaker, you take it home and plug it into your sound system and will be satisfied with the music that the speaker plays. However, with many sophisticated technologies made available in home audio systems today, you now have lots of choices to make such as the choice of features, acoustics, appearance, portability and much more. This article will help you to choose the best home audio system for you. Keep on reading to make a perfect choice in home audio systems.

Travel A Lot? Choose Portability

People often stay away from the portable audio systems fearing that they will lack the audio quality. With the advancements in sound engineering, popular speaker manufacturers have made it possible to create ultra portable music systems with no compromise to quality. If you used to travel a lot and need to move frequently, you should definitely look for portable home audio systems. However, when it comes to buying portable home audio systems with great sound quality, you will have to spare thousands of dollars. Top quality with great portability never comes cheap.

Not an Audiophile? Choose Classy Looks

Not everyone out there needs outstanding music quality in their home audio system. Recent surveys indicate that most of the people buy home audio speaker systems mainly for interior design. The classy looks of the modern music system has found great importance in interior design. If you are not addicted to outstanding music quality, you should give first preference to the looks of the speaker. Great looking features with intermediate sound quality will not cost as much.

Not Enough Cash? There Are Home Audio System For You Too

You should remember the fact that not all the home audio speaker systems are costly. If you just want to listen to music with affordable quality, there are many cheap home theater systems available in the market. Though these audio systems don’t come with the most impressive looks, they fulfill the basic role of delivering pleasant music and reproducing quality sound for television and movies. Look for Discount Home Audio Speaker Systems to save cash.

There are audio systems for everyone’s needs. All you have to do is to identify your needs so that you can make better choices while buying home audio equipment.