Home | Product Reviews | Consumer Electronics

About Barcode and Barcode Scanners

By: Ron

A barcode helps in automatic data identification and collection. This was first invented in 1952 by Bernard Silver and Joseph Woodland. This barcode basically has parallel lines or bards of different width and thickness. The bars represent the binary numbers 0 and 1, and the sequence starts from 0 to 9 which are processed with a help of a computer. This information on the barcode can be read only with the help of a barcode scanner, which needs an optical laser connected to a computer system to read. The code can be read by moving the laser or the barcode pen across the bars, and the computer gets the information embedded in the barcode(s).

So what is this barcode scanner or reader and how does this work? A barcode reader is an electronic gadget which reads the information embedded inside the barcodes. The barcode scanner consists of a light source, photo conductor and a lens. Here the optical impulses are converted into electrical impulses. Most of the barcode scanners contain a decoder circuit that analyzes the image of the barcode with the help of a photo conductor and this is sent to the scanner’s output port. There are three kinds barcode readers; the handheld readers are use for semi-automatic reading, the fixed mount readers are used for automatic reading and finally, the reader gates are used for automatic scanning.

There are four kinds of technologies being used these bar code scanners. The pen type readers have a photodiode and a light source; to read what is on the barcode, the pen has to be moved gradually across the bar. The laser scanner also works just like the pen type reader, here a laser beam is used instead and the light source is just the same. A CCD reader also called as LED scanners use an array of many tiny light sensors which are arranged in a row at the head of the scanner/reader. The main difference between the pen reader and the CCD reader is that, the CCD reader measures the emitted ambient light from the bar; however laser scanners and pen type readers measure the reflected light of a particular frequency originating from the scanner. The newest and the latest type are the camera-based readers which are 2D imaging scanners, which uses a tiny camera to capture the barcode’s image. Here the video camera uses the same technology as in CCD, the only difference is that the CCD scanner has a row of sensors and the camera had hundreds of sensors in two dimensional arrays which can produce an image.

Article Source: Main Articles

Ron Victor is a Expert author for Bagging scales and Electronic bagging scale. He written many articles like Weighing scales, Bench scale articles, Spring scales articles. For more information visit our site. Contact me at ron.seocopywriter@gmail.com.

This article may be reproduced wholly or in part without written permission provided the byline, resource area, and any hyperlinks remain in order to give proper credit to the author.

Internet search engines and directory listings are imperative to your sites existence and success. Submit Your Website to the Searchen Networks directory and search engine to achieve authoritive inbound links.

Please Rate this Article

Click the XML Icon Above to Receive Consumer Electronics Articles Via RSS!

Additional Articles From - Home | Product Reviews | Consumer Electronics

Tips For Buying The Best Garmin GPS - By : Rob88 Quint88
Helmet Camera _ The Gizmo To Record Your Action - By : Jim Jim
Getting the Best DVD Cover Art - By : Mitchel29 Kenneth29
All About The Emerging DVD Technology - By : Victor Epand
A career in industrial electronics - By : Lloyd Wardall
Benefits Of Good Car MP3 Players - By : Victor Epand
Digital Picture Frames The Future Of Photography - By : John Tasher
Mobile Phone Offers for Nokia N96 - Now Shipping - By : searchrankpros1
The Best Way To Buy Electronic Gadgets Online - By : Phillip0 White0
How to Contact the Wholesale Dealers of Electronic Products? - By : Daisy1 Oov1

	Print This Article
	Post Comment
	Add To Favorites
	Email to Friends
	Ezine Ready

	Submit Articles
	Member Login
	Top Authors
	Most Popular Articles
	Submission Guidelines
	Ezine Notifications
	Article RSS Feeds

	New Stuff
	About Us
	Link to Us
	Contact Us
	Privacy Policy
	Terms of Service

:: Top Author Businesses:

Try your luck, Play BlackJack

:: Our Supporters: