What's Inside a Barcode Reader (and How Does it Work?)

In this video Paul tears down, or takes apart, a barcode reader (also known as a barcode scanner.)

He also explains a little of the history of the barcode, and how the barcode reader works by identifying the four main components inside, which are;

a light source
a lens
an image capture device (CCD)
a decoder

This formed a topic for some of our Junior High School classes. The students were invited to take a screw-driver and dismantle the barcode reader, while Paul pointed out, questioned and explained, items of interest. (Paul will do anything to get his students talking!)

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