Barcode scanner

Can somebody help me with my question about a sensor?
Does somebody know the working of a barcode scanner?
About the laser technique and the decoding.

I would like to know something about.

Thanks.

 

I've done the decoding...

I've used light pen connected to a microcontroller and written software in c
that decodes the line widths into numbers. It had some form of dynamic
recalibration for speed changes. That was in my first year of undergraduate
study at university. I had about 8 hours to do it, if I recall. (the
hardware was set up, but I had to write the software from scratch - I think
we were working in pairs, too)

I guess it depends on what kit you are using and what exactly you want to
do.

You should be able to find the specs for barcodes floating about. Sensors
range froma light pen to kit that can scan at high speed, in any
orientation, at a distance of up to at least 0.5m and outputs the barcode
number.

So you can do it all by hand or buy the kit that does it all for you.

Ben

 

www.barcodeisland.com has most of the symbology specs, and lots of good
info.