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Barcode reader reads wrong data
Message
De
20/07/1997 21:49:43
Siu-Hung Lai
The Hong Kong University of Sci. & Tech.
Hong Kong, Hong Kong
 
 
À
19/07/1997 12:30:03
Information générale
Forum:
Visual FoxPro
Catégorie:
Problèmes
Divers
Thread ID:
00040698
Message ID:
00040852
Vues:
30
Vladimir,
Thank you for your reply. The barcode readers is parallel connected with the keyboard. It reads data and send it to the keyboard buffer. At the end of data it sends a .

We are handling book's barcode. The following is how the readers gets wrong data.

Original Barcode 9781568840864
case 1 [879]1568840864 [879] in reverse order
case 2 9781568[468048] [468048] reversed
case 3 978156884[4680] [4680] reversed

Basically part of the digits reverse their order. Have you seen this before?
At the moment I need to add codes to verify the barcode again after a SEEK since case 2 may get the wrong book.

TIA

S H
>Hi!
>
>How works these readers? NT doesn't accept any hardware that use direct
>access to ports and memory....
>
>Have a happy day
>Vladimir Shevchenko
>
>> With the new VFP5 App and PCs, everything is running OK except the
>two
>> old barcode readers sometimes reads wrong data. Is it a hardware or
Siu-hung Lai
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