The bar code is by one and empty differentin width, parallel and
adjoint of one group.Symbol made up according to certain coderule.
Can represent such information asthe letter, figure, etc. The code
systemis an automatism identifies system, whichis designed, made,
scanned and read by barcode symbol.
Barcode coding mode introduce:
There are many series of barcode, ordinaryabout more than 20
ranges, it contains:
Code 39(standard code), Code bar, Code 25(standard),ITF25( across),
Matrix 25,UPC-A code,UPC-Ecode,EAN-13 code(EAN-13 international
commoditybarcode),EAN-8 code(EAN-8 internationalcommodity barcode),
China postal code(asort of changeable matrix 25),Code-B code,MSI
code, Code 11, Code 93, ISBN code, ISSNcode,Code 128( Code 128, it
includes CodeEAN-128), Code 39 EMSEtc
At present, the barcodeis used widely in International, EAN, UPCcode
(Commodity barcode, it is the onlyusing and can mark only 1
commodity in theworld, we can see it in the
supermarketfrequently.Code 39( it can shows numbersand letters, it
is using for managementfiled most widely),ITF 25(it is using
forcirculating goods management more)Codeba(it is using in Medical
treatment, booksfiled mostly) Code93Code128. The EANcode is the
only using commodity code mostlywidely in the world, and has been
the baseof EDI. UPC code is used in USA and Canadamostly.
EAN Code
We take the EAN code as an example, EANcode is designed especially
for the highquality printing, it will be perfect whenusing in the
package of merchandise. Ifwe choose to print of low grade, then
maybeanother barcode will be more suitable, likethe combination
between a short barcodeand computer which has the function of
checkingin the data base.
UPC code
UPC is a commodity code, which is constitutedby USA unification
committee, it is usedfor USA and Canada mostly, and we can seeit on
the products from USA .
Code 39
Code 39 is a code, which can shows numbersand letters information.
It is applied inthe autoimmunization management of industrialbooks
and ticket. Now it is used very widely..
Code bar
Code bar also can shows numbers and lettersinformation. It is
applied in the auto-identificationof medical treatment, books
information,material and etc field.
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