please dont rip this site

Barcode Decoders (chip sets or software)

Thanks to the nice people at for this excellent description of a barcode decoder (as opposed to a scanner) from thier web page at:

A decoder performs the translation of bar and spaces into ASCII characters.A bar code is decoded by using an external decoder, a software decoder, or a built-in decoder in the handle of a decoded scanner. An external decoder is a stand alone unit which is generally keyboard wedged between the keyboard and terminal. An external decoder can also be connected to the serial port of the computer. If the decoder is keyboard wedged, data appears on the screen as if it were typed directly into the computer.

A software decoder performs the decoding using the CPU of the host computer such as a PC. Any input device can be used in conjunction with a software decoder (an adapter to plug directly into the serial port of a computer using a software decoder).

Decoding is also performed in the scanner itself, usually in the handle of a decoded scanner. These devices are generally more expensive than the undecoded scanners and usually plug directly into the serial port of a PC, however, some decoded scanners can directly connect with certain terminals.

Wedge decoders are the easiest to integrate and are supported with nearly all terminals. Unlike software decoders though, they cannot be upgraded to support new symbologies such as two dimensional symbologies for future compatibility. Both the wedge decoder and software decoder can be integrated into an existing application generally without any program modifications.

Some decoders support multiple device input such as magnetic stripe or RS232. The physical connection varies with each manufacturer. The scanning input is generally DB9, RJ11, or RJ45. The serial connection is usually a DB25. A few decoders support a daisy chain configuration in which decoders can be chained together. These decoders are ideal for time and attendance, shop floor control, job-tracking, as well as many other general data collection applications.

See also:

file: /Techref/barcode/decoders.htm, 3KB, , updated: 2009/1/19 13:30, local time: 2024/2/25 15:51,

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF=""> Barcode Decoders</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.

Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?


Welcome to!

Site supported by
sales, advertizing,
& kind contributors
just like you!

Please don't rip/copy
(here's why

Copies of the site on CD
are available at minimal cost.

Welcome to!