How To Choose A Barcode Scanner?

Barcode scanners are light emitting devices that are used to read barcodes. Usually attached to a computer or laptop via PS2 or RS-232, the data collected is stored on a computer for processing or storage. It is now used in many different industries such as retail or production.

They have been on the market for many years now with new versions of barcode scanners available every year. The prices can vary from as low as $50.00 to as high as several thousand dollars. So how do you pick a good barcode scanner?

To answer that question, it is important you know there are 2 major classes of barcode scanners, image-based and laser-based. Image-based barcode scanners use a camera usually embedded in a barcode scanner. The camera will capture the images and then processed by complex image techniques to decode the barcodes. Laser-based barcode scanners uses mirrors and lenses to read the barcodes.

Laser barcode scanners are usually more expensive than image-based scanners. They have their own pros and cons. An image-based barcode scanner do not have internal movable parts therefore are more resistant to drops or knocks than laser barcode scanners. Also, image-based barcode scanners have a shorter scanning distance (4 to 10 inches) compared to laser barcode scanners. On the other hand, laser scanners are more prone to wear and tear due to their lenses. They not only have a longer scanning distance (up to 24 inches) but also are able to scan from a wider angle from the barcode.

Be aware that the scanning distance for both image-based and laser barcode scanners have already improved dramatically over the years and I wouldn’t be surprised if a barcode manufacturer claims an image-based scanner has a scanning distance of 24 inches.

Here are some questions you need to ask yourself before getting a barcode scanner. The size of scanner required? Type of environment the barcode scanner will be using (outdoors, shop, warehouse)? The scanning distance required? Are they to be used hands free or hand-held? Your budget?

So my suggestion is if you need a barcode scanner for long range scanning, get a laser barcode scanner. For short range scanning, use an image-based barcode scanner such as a CCD barcode scanner. The environment as I asked earlier also plays an important part. If the barcode scanner is being used outdoors or in rugged environments where it is expected to take a drop or knock or two, then it is best to get an image-based barcode scanner. If it were for example being used in a retail shop, then a laser barcode scanner would be the best choice.

There are such a wide variety of barcode scanners available that I just can’t explain completely in this article. If you are in doubt, consult the barcode manufacturers such as symbol or metrologic who have sales consultants who are able to do an analysis of the type of barcode scanners needed by your business.

E-Guide: how to choose a DVD player

If you buy for yourself or a gift for a loved one, finding that only certain DVD player is not as easy as it sounds. There are so many formats, sizes and features added to DVD players today that you can sift through hundreds of players before finding the right one for the right price. Use this quick guide to compare the types of DVD players available in the electronics market.

DVD Player sizes

Determine what size you need player. If you are adding a DVD player to your home entertainment system, determine where you are going to put it and how much space is available. Full-size DVD players may be large enough for you to make sure your space before buying. DVD players are also very thin at the time and most have a slot in the front that slides in and out to insert the DVD. This is great if you have a space that is limited in time.

For odd shaped spaces or places very tight, there are different sizes and shapes of DVD players. These are usually available at electronics stores online so you'll have plenty of styles to choose from. DVD player Vertical, for example, sits upright like a vertical computer drive. It comes with support for maintain it in a strong position. If you still have your old VHS collection, there are combo DVD/VHS machines that play both formats. This saves space as well. Also available are super slim DVD players and DVD players of "space saver" to suit your personal needs.

Types of DVD players

After you determine what size you need, you are ready to compare name brands and characteristics in electronics store or site of your choice. Often you can find many different brands and styles of players in the mall a single electronics online. This will allow you to compare without spending hours searching through many sites.

Some of the features that you will see include progressive, slip recording time, EZ Edition, zoom, slow motion, HD (high definition) DVD, video/audio front Sockets, playback of CD-R/-RW, MP3-CD playback, D/A converter, favorite scene selection, TV Guardian and many others. You cannot find a special DVD player that loads all the resources, so it is wise to determine which features are important to you before you select a player. What features you will probably use more? You will probably never use?

You'll also notice that there are many brand names of DVD players. Some of the well-known brands include Philips, Coby, Emerson, Magnavox, Toshiba, Sanyo and Panasonic. Prices for DVD players can range from about $ 50 to $ 500 depending on the features you choose.

If you buy a DVD player for your son, also there are players with children's themes. The player will look really like cartoon character child's favorite!

To find the DVD player that is right for you, look it up online by brand name, features or price to compare. Or, you can visit a shopping online to compare all in one place. In addition to electronics, you can also find other great items on an online shopping such as computers, notebooks, lingerie, pets, automotive products, phones, jewelry, household products, toys and much more. Take your time to find the DVD player that meets your needs. You'll enjoy years of quality entertainment!

How To Choose A Home Theater System

When choosing a home theater system one must first consider there budget. In years past a home theater system was for only the rich, but with improvements in technology, home theater system are available for almost any budget. Costs range from $299 to $30,000 or more, depending on the components chosen and the size of your home theater system.


Components

Most people try to achieve creating a movie theater in there home. Now of days a most theaters have surround sound system. Therefore in a home theater you will want to look for the following components, a large-screen television (usually 32” or larger), and a speaker system with a subwoofer (a loud speaker designed to reproduce bass frequencies) & front and rear (usually a minimum of 5 speakers) speakers for quality sound. You will also need an audio/video surround receiver, a DVD player, and a cable or satellite receiver. Most people also add a video recorder and a DVD recorder.


The big screen television

High-definition television (HDTV) is the most popular for Home theater systems. HDTV’s digital technologies give a much sharper & crisper picture quality, also an improved video field to bring the audience right into the middle of the action.

One of the things you must consider when you design your theater system is to look to the future. This way your system will stay up to date longer. To do this you will need to consider things like purchasing a high-quality, integrated HDTV monitor with wide screen display, because the conventional full screen movies we have enjoyed for years will someday be replaced with the movie theater style wide screen movies that more and more we are enjoying now. Even cable systems are delivering digital viewing services, which will only continue to develop.

Wide-screen HDTV monitors start at 27” for a traditional square shape and 30” for a wide-screen, and range up to 82”.

When considering a televisison for a smaller area you may want to look at direct-view televisions. For larger areas you can consider rear-projection or plasma televisions, Direct-view televisions don’t require viewers to sit so far back from the viewing screen.


Surround-sound

Remember when considering your home theater system that sound is a very important part of the experience. You can buy a box system for as little as $200. You will want to look at different system and choose the one that best fit your needs and the sound quality that best fit you space and needs.

Dolby Digital 5.1 surround sound has been the industry standard for years, says Craig Eggers, director of consumer electronics technology marketing for Dolby Laboratories. Dolby is now the North American audio standard for HDTV. This technology "delivers 5.1 channels of fully discrete surround sound audio to any home theater," Eggers says. This means the soundtracks are recorded with five main channels: left, center, right, left surround and right surround, plus a low-frequency effects bass channel.

Surround sound systems use a minimum of five speakers to bring the listener inside the viewing experience. Instead of watching the picture, you're a participant--just like at a movie theater.

These box systems also include various components such as DVD players or recorders, or am fm stereo, VCR players or recorders, some system may also include iPod or Mp3 technology.

This will complete the basic systems, but don’t forget that you may also want to consider a camcorder or digital camera technology for those home videos.

Once you have developed the home theater that best fits your needs the only thing left is to sit back and enjoy and don’t forget the popcorn.

Written by Kevin Hampton, visit me at www.costlesselectronics.com


How-To Tips
Cables are an integral part of a home theater. Good cables will enhance the performance of your entire system, while poor quality cables can actually reduce quality. Look for the following when cable shopping:
· Look for cables with high-density shielding, gold-plated connectors and durable jackets to provide long-lasting, reliable connections. If you have the choice of using either digital or analog cables, choose digital to eliminate unneeded digital-to-analog and analog-to-digital conversions, which lead to reduced image and sound quality.
· When you're looking for the right cables, make sure you avoid generic cables made with low-grade materials and low-quality construction because they're highly prone to noise and distortion. Watch especially for connectors that fit loose or too tight, with inadequate shielding and unprotected solder joints.
· Be wary of manufacturers that don't provide information concerning the construction of their cables. Quality cable companies, such as Accell or Monster Cable, often will provide a cable cut-away illustration, providing clear visibility of their cables' material and construction.
· Finally, make sure to keep your cable lengths as short as possible to get the best quality sound.
Source: Accell Corporation

How To Choose A Digital Camera

Digital cameras have exploded in popularity in recent years. The convenience that they have brought to the market with the ability to review your pictures instantly and correct any imperfections by retaking the picture and the ability to store, edit, and email them from your own personal computer has fueled this growth.

It is now no longer a matter of if you need a digital camera, but rather which one do I choose?

First decide how you are going to use the camera. If simplicity is your goal, a simple point and shoot digital camera will do. If you wan the flexibility to be able to grow with the camera as you gain experience get a point and shoot that offers manual controls, this way you will have the best of both worlds – infinite options for creativity and the ease of an automatic mode.

The next item on your agenda should be megapixels. To keep it simple, the more megapixels the better the picture will be. So, how many megapixels do you need?
If all you are doing is printing or emailing photos, a 3 or 4 megapixel digital camera will work. If you are going to use it for more professional work and enlarging photos, go with one with 5 or 6 megapixels.

If you want uncompromising clarity go with a 7 megapixel or above. Just remember the higher the megapixels the higher the price!

How much zoom do you need? You have two types of zoom with digital cameras, digital and optical. Optical is the more important because it brings your object closer without losing quality. The digital zoom will bring the object in closer, but you sacrifice the quality of the picture. If all you do is take everyday pics a 1x to 4x optical zoom will do. If you take pics like sporting events, get one with a 5x optical zoom or higher. For really intense professional work choose a 10x or better optical zoom.

Digital cameras have evolved now to the point where you can get a great fully featured camera that will fit comfortably in your shirt pocket so don’t think you have to get a large one to get good quality. If you are using it for more professional use with large optical zoom and such expect to have to buy a larger one however.