Code 39 can be defined as the
first alphanumeric barcode symbology that may encode
capital letters A-Z, numbers (0-9) and unique characters including
minus (-), period (.), dollar sign ($), percent (%),
slash (/) along with (+). Code 39 is a variable length,
discrete and low data density barcode font developed in
1974 by Dr. David Allais and Ray Stevens of
Intermec.after some time, it was regulated as ANSI MH
10.8 M-1983 and MIL-STD-1189. Code 39 also recognized as
Code 3/9, USS Code 39, Code 3 of 9, Alpha39, USD-3, Type
39 and others.
Character set of Code 39 Barcode
The character set of Code 39 barcode symbology is consisting of 43 characters with an extra character exercised as delimiter or start/stop character.
- Capital letters (A-Z).
- Special Characters such as space, minus (-), period (.), dollar sign ($), slash (/), percent (%) and plus (+).
A special character asterisk (*) is implemented as start/stop character.
Structure of Code 39 Barcode
Code 39 barcode symbology has the following mentioned structure:
1.A Start character (*).
2.Message to be encoded.
3.Stop character (*).
Each character of Code 39 barcode symbology contains 9 bars comprising of 3 wide bars and rest with narrow bars. Consequently a single character is consist of 5
black bars and 4 white bars. Space between barcode
characters is displayed by inter character space.
Intercharacter space has undefined width same as narrow
Applications of Code 39 Barcode
The most commonly used barcode
symbology in non retail applications is Code 39. It is used in
labeling name badges, manufacturing, military, and
health applications, inventory areas and industries.
Generate Code 39 Barcodes through Barcode Generator.