Barcode

Checkout scanner

1D barcode

1/6

A barcode is a series of dark and light parallel lines of varying thickness.
Each digit is coded as a unique bar pattern. Information sits along one line — 1D.

Legend

	Laser / LED Red light sweep
	Barcode 1D dark/light bars
	Reflection Light vs dark
	Sensor Photoelectric cell
	Digital Pattern → bits
	Checkout SKU lookup

Coming soon

Extra practice and notes will live here.