Definition.

The term "barcode" is usually used to refer to a symbol that represents data in a form that is easily read by a computer.

Variations of barcodes.

Barcodes come in a variety of formats.  Most barcodes in use today are linear, or 1D barcodes.  They appear as a series of vertical lines, and both the lines and the spaces between them vary in width.  2D barcodes appear as a series of black squares on a white background.  They are becoming more common, but are very specific in their application.

1D barcodes.

1D barcodes come in a variety of symbologies.   This is very similar to the different fonts that might be used to produce a letter.  Although different fonts may change the appearance of the letter, the underlying infomation is not affected.

Symbologies.

Common symbologies today include code 39, code 128, UPC and EAN.  Each has their own strengths.  Code 39 is an older and simpler code, 128 provides the ability to code more characters, UPC is specifically used in retailing, and EAN is coming in as a more common standard around the world.

Scanners.

Most scanners  can read all barcode symbologies, though some set up may be required.

Barcode Labels.

Not as simple as they first appear, there are many detailed issues to be considered when selecting a barcode label, whether for asset management, equipment maintenance, or to manage calibration.  Click here for detailed information on barcode labels.

Barcodes, Barcodes or Bar-codes?

Some folk have strong opinions on this.  We think all spellings are equally good, but barcodes is most commonly used, so that is the one that we generally prefer.

For more information, or to ask a detailed question, contact SageData directly.