Terminology

Barcode Scanner: Operation Method

Operation Method
1. At power-up, the microprocessor sends the POWER-UP signals over Buzzer & LED (a long beep & a flash) as an indication that the barcode scanner is ready for operation.
2. The barcode scanner, which is in Trigger Mode by default, once triggered by either hardware or software method, will emit a narrow, horizontal slab of light, which is aligned with the sensor’s field of view.
3. The optical sensor captures the linear image and produces an analog waveform. It is later converted into a digital signal by an A/D converter
4.The digital signal is sampled and analyzed by the decoder firmware running on the microprocessor.
5. Upon a successful barcode read, the microprocessor turns off the illumination LEDs, sends the GOOD READ signals (a short beep & a flash) over Buzzer & LED and transmits the ASCII data to the host.


Barcode Scanner: Operation Method


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