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Barcode Structure
Barcode types
What is JAN/UPC/EAN?
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What is Standard Distribution Code?
What is CODE39?
What is NW-7 (Codabar)?
What is CODE128?
What is EAN-128?
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Barcode Types

There are many barcode types. The following table represents some of the more widely used types.
  JAN(EAN、UPC) ITF CODE39 NW-7
(CODABAR)
CODE128
Symbol JAN bar code sample ITF bar code sample CODE39 bar code sample NW-7 bar code sample CODE128 bar code sample
Character type Numbers only (0 to 9) Numbers only (0 to 9) Numbers (0 to 9), symbols (-,space, $, /, +, %, .), Alphabet(A to Z ), Start/stop character(*) Numbers (0 to 9), symbols (-, $, :, /, +, .), Start/stop character(A, B, C, D)
All ASCII Codes
Numbers (0 to 9)
Upper case/lower case letters
Symbol
Control characters (such as "CR" and "STX")
Features Standardized as distribution code. Has smaller bar code size than other codes with the same digits. Uses alphanumeric characters to enable representation of model numbers. Code can be represented.
Handles all types of characters.
The size can be minimized by using numbers only (minimum 12 digits).
No. of
representable
characters
13 or 8 digits Even digits only No restriction No restriction No restriction
Characteristics
of bar
structure
There are 4 types of bar sizes.
There are no start/stop characters.
2 bars and 2 spaces represent 1 character.
There are 2 types of bar sizes.
There are no start/stop characters.
5 bars (or 5 spaces) represent 1 character.
There are 2 types of bar sizes.
The start/stop character is "*".
5 bars and 4 spaces represent 1 character.
There are 2 types of bar sizes.
The start/stop character is either a, b, c, or d.
4 bars and 3 spaces represent 1 character.
4 bars and 3 spaces represent 1 character.
There are 3 types of start/stop character and each of them represents different character type.
3 bars and 3 spaces represent 1 character.
Actual application sample Common code for 60 countries all over the world. About 90 percent of daily needs carry this code. Used by apparel and publishing industries. Standardized as a distribution symbol. Widely used in technological fields.
MIL (Military Standard)
AIAG (Automobile Industries Action Group)
EIA (Electric Industries Association)
NATO (North Atlantic Treaty Organization)
Blood bank
DPE
Library
Parcel express forwarder
TOYOTA
Started to be used as EAN-128 in various industries.
Japan Chain Stores Association
Frozen food/chilled food industry
Medical industry


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