Many years ago I developed a system that collected data from a large number of barcode readers, as well as, other electronic systems. Most barcode readers then transmitted serially and could attach a prefix and postfix to the scan. We attached the individual readers to MUXs and the MUXs to a large serial switch (actually bank of serial switches). The serial switch had memory (most do). This then goes, of course, attachesto one serial port on the computer.
So, depending on the nature of your app, you can then either let the reads accumulate in the switch and have your program poll the serial port when your application is ready, or set up your program to be interrupt or event driven by the serial port. Use the prefix and postfix feature of the barcode readers to parse your stream. Jim Bufalini -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of kee nethery Sent: Tuesday, November 30, 2004 6:18 PM To: How to use Revolution Subject: Re: barcode scanner On Nov 30, 2004, at 3:37 AM, Paolo Mazza wrote: > I want my rev-application to collect data from a barcode scanner > in background . In other words, I want to use my PC (WIN-XP) with > other programs and at the same time I want my application to collect > and save data from the barcode scanner. Is it possible? yes but the input has to be through something other than the normal keyboard interface. You'll need an alternate input stream and you'll need code to watch that input stream. The most common, but becoming obsolete quickly, is a serial interface. Then you have your app watch the serial interface and handle the data it receives. Beyond my abilities, I think Sarah has done much more work in this area. Kee Nethery _______________________________________________ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail _______________________________________________ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
