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Book explains bar-code technologies

Baffled by bar codes?
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A free 90-page soft-cover book from Rockwell Automation/ Allen Bradley (Milwaukee WI) describes the basics of bar-code technology including symbologies printing products and applications. Bar Code Basics-An Introduction to Bar Code Technology is a second edition; Bar Code Basics was published in 1989. The revision describes everything from what a bar code is to how the systems work to applications using bar-code technology as part of an overall automation control strategy. It's designed for engineers and plant floor personnel. Also included in the publication is a listing with names addresses phone/fax and Internet sites for trade associations involved in bar coding as well as a handy glossary of terms related to the subject. Among the revised information in this second edition: * Two-dimensional symbol codes are gaining popularity in packaging distribution where considerable data is required. Both linear and two-dimensional symbols are detailed. * Shipping container codes and other bar-code label standards are reviewed. Also discussed are factors to consider when designing a bar-code label. * Line speed scan rate and distance and optical throw are among the factors governing the selection of a bar-code system.

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