How do the bar code scanners work?
Barcode scanner can be the pen or wand type infared scanners or the newer laser scanenrs. They connect to a users computer either in-line with a PS/2 keyboard connection or via USB connector. The PS/2 keyboard connection is a wedge type connector that fits in-line with the existing keyboard. When a user passes the scanner over a bar code label the bar code is translated into numerical key strokes. The scanners reduce user error and make the most efficient use of time, requiring only a fraction of a second to scan each label.
