Hello everyone. I'm looking for information on how a barcode scanner works. I've found some explanations that state the reflected light is measured using a photo-transistor. From there, the signal is sent to an ADC which is processed in an algorithm to determine the barcodes data.
The part that confuses me is how does the scanner read the individual "bits" of data when every explanation I can find says the reflected light is processed as a whole. I hope that wasn't too confusing. Thanks for the help in advance!
P.S.
I'm mostly concerned with UPC codes
The part that confuses me is how does the scanner read the individual "bits" of data when every explanation I can find says the reflected light is processed as a whole. I hope that wasn't too confusing. Thanks for the help in advance!
P.S.
I'm mostly concerned with UPC codes