Quicklabel Designer Pro Uživatelský manuál stáhnout pdf (Strana 164)

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3. Intherightsideofthedialogboxselectalreadyprepareddataconnectionorcreateanew

one.

4. OnceyouhavetheODBCdataconnectionprepared,selectitandclosethedialog.

5. Thefieldsfromtheselecteddatabasecannowbeusedonthelabel.

Creating Custom Check Digit

Youcanaddneworeditanddeleteexistingalgorithmsbyclickingappropriatebuttons.Algorithm's

parametersaredefinedinEditalgorithmdialogbox,whichhasfollowingoptions:

Editingcheckdigitalgorithm

Tounderstandallparameters,youmustknow,howcheckdigitiscalculated.Firstofall,wemust

haveanumericvalueandontopofthatthecheckdigitwillbecalculated.Ifweightsarerequired,

wewillneedthemaswell.Let'slookatEAN13checkdigitcalculation:

Value:123456789012

Weights:1,3

Whenstartingcalculating,eachdigithasitsweight.Whenonlytwoweightsarespecified,thethird

digitgetsthefirstweight,theforththesecond,andsoon.Ifonlyoneweightisspecified,alldigits

havethesameweight.AccordingtoSumdetermination,wecanuseweights(sumoftheproducts)or

not(sumofthedigits).EAN13algorithmusesproducts,sowedefineSumoftheproducts.

Thesumis:1×1+2×3+3×1+4×3+5×1+.....+2×3

Whenthesumiscalculated,wetakemodulusparameteranddividethesumwiththatnumberand

remembertheremainderofdivision.Thiscanalreadybetheresult.

IfResultcomplementedisspecified,wesubtracttheresultfrommodulusandsowegetthenew

value.Whenthisvalueislessthan10,wealreadygotcheckdigit.Ifitisgreatervalue(twodigits),

wetakethewholevalueorjusttheleastsignificantdigit(Onedigitonly)astheresultofcheckdigit

algorithm.

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Quicklabel Designer Pro Uživatelský manuál Strana 164