This situation means that after successfully scanning the code, the scanner will make a "beep" sound or a light flash to indicate that the scan is successful.

A barcode scanner is a device used to scan barcodes or QR codes. It reflects the barcode or QR code onto a photoelectric converter through an optical system, and the photoelectric converter converts the reflected light. into an electrical signal.

The analog voltage is then amplified by the circuit and finally filtered and shaped to form a square wave signal corresponding to the analog signal, which is interpreted by the decoder as a digital signal that can be directly accepted by the computer.