Barcode Label Printers
Glossary C
Browse through our glossary to find out definitions for bar coding and RFID terms.
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| Glossary Term | Definition |
| CODE 128 | This continuous, variable length bar code symbology is capable of encoding the full ASCII 128 character set, the 128 extended ASCII character set and 4 non-data function characters. Code 128 allows numeric data to be represented in a compact double-density mode with 2 data digits for every symbol character. Each Code 128 symbol uses 2 independent self-checking features, character self-checking via parity and a module 103 check character. Each Code 128 symbol consists of a leading quiet zone, a start pattern, characters representing data, a check character, a stop pattern and a trailing quiet zone. Each Code 128 character consists of 11-1X wide modules. Each symbol character is comprised of 3 bars alternating with 3 spaces starting with a bar. Each element (bar or space) may consist of 1 to 4 modules. Code 128 has 3 unique character sets designated as code set A, B and C. Code set A includes all of the standard uppercase alphanumeric keyboard characters, ASCII control characters having an ASCII value of 0 to 95 and 7 special characters. Code set B includes all of the standard uppercase alphanumeric keyboard characters, lower case alphabetic characters (specifically ASCII character values 32 to 127) and 7 special characters. Code set C includes the set of 100 digit pairs from 00 through 99, inclusive, as well as 3 special characters. The FNC1 character in the first character position after the start code of Code 128 designates that the data that follows complies with the UCC.EAN-128 standards. |
| CODE 39 -- (3 of 9 Code) | A discrete, variable length bar code symbology encoding the characters 0 to 9, A to Z and the additional characters "-" (dash), "." (period), Space, "$" (dollar sign), "/" (slash), "+" (plus sign), and "%" (percent sign) as well as a special symbology to denote the start and stop character, represented as an "*" (asterisk). Each Code 39 symbol consists of a leading quiet zone, a start symbol pattern, symbol characters representing data, a stop pattern and a trailing quiet zone. Each Code 39 character has 3 wide elements out of a total of 9 elements. Each symbol consists of a series of symbol characters, each represented by 5 bars and 4 intervening spaces. Characters are separated by an intercharacter gap. Each element (bar or space) is one of two widths. The values of the "X dimension" and "N" remain constant throughout the symbol. The particular pattern of wide and narrow elements determines the character being encoded. The intercharacter gaps are spaces with a minimum nominal width of 1X. |
| CODE 49 | This symbol is a stack of 2 to 8 rows. Each row encodes row count information plus data characters. |
| CODE 93 | This symbol is a full alphanumeric bar code that is capable of encoding all 128 ASCII characters. |
| COMPOSITE CODE | A classification of barcodes where two different symbologies (usually one linear, the other2D) can be combined into one arrangement. The 2D part of the code will contain supplemental data to the linear key code whilst the linear code can provide a positioning reference for the 2D code. Examples are Aztec Mesas and RSS codes. |
| CONTACT SCANNER | A bar code scanner that requires physical contact between the encoded medium and the scanner. A pen scanner is a typical example. |
| CONTINUOUS CODE | A bar code symbol where all spaces within the symbol are parts of characters (i.e., I 2/5), with no intercharacter gap. |
| CONTINUOUS MEDIA | Label, ticket, or tag stock media that does not contain any notches, gaps, or holes between each label. The label length must be specified in the label program. |
| CONTRAST | The difference in reflectance between the black and white (or bar and space) areas of a symbol. |
| CPI | Characters per inch (see bar code density). |
| CSV | Comma separated, variable field length file. |